ATHANY REYES, BY AND THROUGH HIS MOTHER AND NEXT BEST FRIEND, DAISY BARCENAS, AND DAISY BARCENAS, INDIVIDUALLY, APPELLANTS,

v.

CATHERINE NGUYEN ROUSH, M.D., AND THE WOMAN'S GROUP, APPELLEES

CASANUEVA, Judge.

Daisy Barcenas gave birth to Athany Reyes on May 25, 2005. At his birth, Athany appeared to have limited use of one of his arms, possibly a shoulder dysto-cia which may be caused by an injury to the brachial plexus nerve during birth. *588Dr. Catherine Nguyen Roush was the attending obstetrician. Athany underwent several years of physical therapy but by February 13, 2009, it appeared that continued therapy would never completely resolve the problem. Ms. Barcenas at that time consulted a specialist who told her that surgery was a possibility to attempt to restore full use of his arm. She was also told at that time that Athany’s injury might have been caused by medical negligence. Based on this information, on February 7, 2011, she filed a lawsuit against Dr. Roush and her practice, The Woman’s Group (hereinafter Dr. Roush). In response, Dr. Roush contended that the suit was barred by the statute of limitations and filed two motions to dismiss the complaint. The trial court granted the motions and dismissed the suit. Ms. Barce-nas timely appealed the dismissal of the complaint. Because of the procedural posture of the case, we must reverse.

Procedural History

A few months after Athany’s birth in 2005, Ms. Barcenas contacted a law firm that specialized in representing plaintiffs in medical malpractice actions. This law firm then instituted the statutorily required presuit investigation process. After reviewing the obstetrical records, the law firm advised Ms. Barcenas that it appeared to them that Dr. Roush had not deviated from the prevailing standard of care in delivering Athany. No further legal proceedings were instituted until 2011.

When served with Ms. Barcenas’ complaint in 2011, Dr. Roush twice moved to dismiss. In her first motion, she argued that either the complaint or paragraph eleven of the complaint was an improper pleading and subject to dismissal for failure to state a cause of action. Paragraph eleven of the complaint alleged: “Plaintiff did not become aware or discover that a claim for malpractice arose until February 18, 2009.” Dr. Roush contended that this was an improper conclusion, one not supported by any ultimate fact, and, more importantly, an incorrect legal standard regarding the application of the statute of limitations.

Dr. Roush’s second motion for dismissal claimed that the complaint was a sham pleading. She attached documents to this second motion seeking to establish that Ms. Barcenas had consulted a medical malpractice firm in 2005 to start a presuit investigatory process. These documents established, she argued, that paragraph eleven’s claim that Ms. Barcenas did not discover her cause of action until 2009 did not comport with the fact that Ms. Barce-nas had started a presuit investigatory procedure in 2005, which fact showed that she suspected medical negligence shortly after Athany’s birth. Thus, Dr. Roush concluded, the complaint was a sham pleading because it sought to revive a medical malpractice claim precluded by the appropriate statute of limitations.

In her affidavit opposing the motion to dismiss, Ms. Barcenas declared that at Athany’s birth Dr. Roush told her that Athany’s arm injury would be fine and would go away in a few months; that she believed the doctor; that at the time of Athany’s birth she did not know what a brachial plexus injury was; that for the first time in February 2009, following an MRI, she learned that the injury to Atha-ny could be caused by medical malpractice; and that at that point she contacted an attorney. At the time of the MRI, Athany was not quite four years old.

Issues on Appeal

Ms. Barcenas presents three issues for our review. First, she claims that the trial court erred in dismissing the complaint because Athany had not yet reached his eighth birthday, citing section 95.11(4)(b), *589Florida Statutes (2011).1 We decline to address this issue because it was not the basis for dismissal.2 In her second issue, she claims that the dismissal was error because the trial court relied on facts outside the four corners of the complaint.3 Third, she claims the trial court erred in concluding the complaint was a sham pleading without the benefit of an eviden-tiary hearing. Our discussion of these last two issues can be combined.

Standard of Review

Because whether to dismiss a complaint is a pure question of law, we give no deference to the trial court’s findings. “This court reviews an order granting a motion to dismiss de novo.” Swope Rodante, P.A. v. Harmon, 85 So.3d 508, 509 (Fla. 2d DCA 2012).

“A motion to dismiss tests the legal sufficiency of a complaint to state a cause of action and is not intended to determine issues of ultimate fact.” Roberts v. Children's Med. Servs., 751 So.2d 672, 673 (Fla. 2d DCA 2000). And, on a motion to dismiss, “ ‘the trial court is limited to consideration of the allegations contained within the four corners of the complaint.’ ” Swope Rodante, 85 So.3d at 509 (quoting Al-Hakim v. Holder, 787 So.2d 939, 941 (Fla. 2d DCA 2001)).

Discussion

We focus, as did Dr. Roush’s motions to dismiss, on paragraph eleven of the complaint. Paragraph eleven stated that the plaintiff did not become aware or discover until February 13, 2009, that she had a claim for medical malpractice. Dr. Roush first contended that paragraph eleven did not plead an ultimate fact as required but was instead an impermissible legal conclusion and thus failed to state a cause of action. And, based on the knowledge that Ms. Barcenas had consulted with a medical malpractice plaintiffs’ law firm shortly after Athany’s birth in 2005, Dr. Roush next contended that paragraph eleven evidenced that the 2011 complaint was a sham because the statute of limitations had run.

We turn first to the dismissal based on the grant of Dr. Roush’s motion to dismiss for failure to state a cause of action. Because the trial court on a motion to dismiss was not allowed to determine the veracity of paragraph eleven, it was restricted to consider whether paragraph eleven was properly pleaded. See Roberts, 751 So.2d at 673. But the trial court’s order of dismissal does not contain its reasoning on this point; it merely states that the motion was granted. Had the trial court concluded that paragraph eleven did constitute an improper pleading *590because of the absence of ultimate facts— and because this was the first complaint filed — the trial court ought to have dismissed the complaint without prejudice or with leave to amend. See Moore v. Liberty Mut. Ins. Co., 988 So.2d 1285 (Fla. 2d DCA 2008); see also Laurencio v. Deutsche Bank Nat’l Trust Co., 65 So.3d 1190 (Fla. 2d DCA 2011). Ultimately, it may be established that amendment will be futile. But at this stage of the proceeding, public policy favors the liberal amendment of pleadings. See Laurencio, 65 So.3d at 1193. However, our reversal is not based solely on the trial court’s failure to grant leave to amend the complaint.

We further determine that the trial court erred in finding that the complaint was a sham pleading as Dr. Roush’s second motion to dismiss claimed, citing Florida Rule of Civil Procedure 1.150. Rule 1.150 permits a trial court to strike a party’s sham pleading and provides:

(a) Motion to Strike. If a party deems any pleading or part thereof filed by another party to be a sham, that party may move to strike the pleading or part thereof before the cause is set for trial and the court shall hear the motion, taking evidence of the respective parties, and if the motion is sustained, the pleading to which the motion is directed shall be stricken. Default and summary judgment on the merits may be entered in the discretion of the court or the court may permit additional pleading to be filed for good cause shown.

Under this rule, a trial court may dismiss a complaint when it is shown to be “good on its face but is false in fact[.]” Rhea v. Hackney, 117 Fla. 62, 157 So. 190, 194 (1934).

But a pleading cannot be stricken out as sham unless the falsity thereof clearly and indisputably appears. As otherwise expressed, to warrant the rejection of a pleading as sham, it must evidently be a mere pretense set up in bad faith and without color of fact. The rule cannot be applied to any case except where the defense is shown to be a plain fiction. And when a defendant, in defending against a plaintiffs motion to strike out his defense as sham, supports it by a special affidavit stating specifically the grounds of it, he cannot, as a general rule, be deprived of the benefit of a trial of his plea in the usual mode, as a case for striking out does not exist merely because the court may perceive but little prospect of the success of the alleged sham pleading.

Id. at 193-94. On the present record, we are unable to conclude that the complaint is, in the words of our supreme court, a “mere pretense set up in bad faith and without color of fact,” and thus “plain fiction.” See id.

As rule 1.150 directs, the trial court did hold a hearing on Dr. Roush’s motions to dismiss, but there was insufficient evidence submitted at that hearing to sustain a conclusion that either the complaint or just paragraph eleven was a sham pursuant to Rhea. Rule 1.150(a) states that the trial court shall take “evidence of the respective parties.” See Miller v. Nelms, 966 So.2d 437, 440 (Fla. 2d DCA 2007) (“rejecting] any notion that, absent a stipulation of the parties, the circuit court could rule on a motion to strike a complaint as a sham by merely examining the complaint” (citing Furst v. Blackman, 744 So.2d 1222, 1224 (Fla. 4th DCA 1999))). At the hearing on Dr. Roush’s motions to dismiss, the trial court heard argument of counsel and reviewed Ms. Barcenas’ affidavit that was filed in opposition to the motions to dismiss, but it neither heard testimony nor admitted evidence. As we stated in Miller, a full evi-*591dentiary hearing is required so as to give both sides “an opportunity to offer evidence on the issue of whether the complaint alleged a false cause of action.” Id. at 440. Argument of counsel at the hearing, reciting the procedural history of this case as we have outlined it above, suggests that Ms. Barcenas knew within months of Athany’s birth that there was a reasonable possibility that negligence had occurred. Indeed, the trial court’s order of dismissal relied on that argument by referring to Ms. Barcenas’ knowledge of the reasonable possibility that medical negligence had occurred, citing Tanner v. Hartog, 618 So.2d 177 (Fla.1993).4 But argument of counsel is insufficient to constitute a full evidentiary hearing. Sperdute v. Household Realty Corp. 585 So.2d 1168, 1169 (Fla. 4th DCA 1991) (“[A]n evidentiary hearing involves taking evidence. Neither the submission of affidavits nor argument of counsel is sufficient to constitute an evidentiary hearing.”).

The effect of the trial court’s granting of Dr. Roush’s motions to dismiss and dismissal of the complaint was to rule that the suit was barred by the statute of limitations. To conclude that a suit is barred by the statute of limitations is both a factual and legal determination. Lacking a full factual development in the record before the trial court, this “short circuit” disposition was error.5

Therefore, we reverse the order of dismissal and remand with instructions to reinstate the complaint and for further proceedings consistent with this opinion. Because the issues raised by Dr. Roush’s motions to dismiss were not fully and factually addressed, another hearing on her motions will be in order.

Reversed and remanded.

NORTHCUTT, J., Concurs.

ALTENBERND, J., Concurs with opinion.

ALTENBERND, Judge,

Concurring.

I fully concur in the court’s opinion. The fact that Ms. Barcenas contacted a *592law firm within a few months of this child’s birth to determine whether he had suffered an injury as a result of malpractice suggests that the lawsuit filed more than five years after the child’s birth is probably barred by the statute of limitations. This cannot, however, be established from the face of the record on a motion to dismiss. If this type of injury can occur from natural causes at the time of birth and is not necessarily caused by malpractice, it is at least conceivable that the malpractice could not be discovered until some time had elapsed from the date of birth.

I write primarily to question whether Florida Rule of Civil Procedure 1.150, which allows a court to strike a sham pleading, performs any useful function and whether it should be eliminated. This rule is rarely used and seems to bait experienced trial judges into premature decisions. See, e.g., Miller v. Nelms, 966 So.2d 437 (Fla. 2d DCA 2007); Sunex Int’l Inc. v. Colson, 964 So.2d 780 (Fla. 4th DCA 2007); Cromer v. Mullally, 861 So.2d 523 (Fla. 3d DCA 2003); Furst v. Blackman, 819 So.2d 222 (Fla. 4th DCA 2002); Furst v. Blackman, 744 So.2d 1222 (Fla. 4th DCA 1999). In light of rule 1.510 authorizing a court to enter a complete or partial summary judgment and rule 1.140(f) permitting a court to strike “redundant, immaterial, impertinent, or scandalous matter from any pleading at any time,” rule 1.150 has little, if any, practical application. See, e.g., Sean R. Santini, Motions to Strike Sham Pleadings and Summary Judgment Motions: Is There a Difference?, 77 Fla. B.J. 52, 53-54 (Oct. 2003).

Rule 1.150 contemplates that the trial judge will conduct an unusual evidentiary hearing on a verified motion, not to determine an issue in the case, but rather to determine whether factually the pleading is a sham. See Meadows v. Edwards, 82 So.2d 733 (Fla.1955). I cannot recall ever seeing a case in which such an evidentiary hearing was actually held. Attorneys typically set these motions for hearing without reserving the time required for an eviden-tiary hearing. In an effort to move the case along, the trial court rules on the motion without an evidentiary hearing, only to get reversed a year later.

This rule is a relic of the past. Its origin as a written rule in Florida can be traced back to rule 22 of the Florida Revised Common Law Rules promulgated in 1936, but its roots trace back even further. See, e.g., Scarfone v. Silverman, 408 So.2d 778, 780 (Fla. 2d DCA 1982); Liebling v. Barbara Bldg. & Dev. Corp., 52 F.2d 183, 185 (S.D.Fla.1931); Bruce J. Berman, Ber-man’s Florida Civil Procedure § 150.1 (2011-2012 ed. 2011). The current version of rule 1.150 was part of the 1967 revision of Florida’s rules of civil procedure. See In re Fla. Rules of Civil Procedure 1967 Revision, 187 So.2d 598, 606 (Fla.1966).6 In 1967, when Florida first adopted the majority of the current rules, our rules were almost identical to the new Federal Rules of Court. The Federal rales contained no rule on sham pleadings. See Berman’s Florida Civil Procedure § 150.2. For reasons that are not clear to me, Florida elected to insert this common law rale into the new rules.

It is worth noting that our current procedures for summary judgment were not extensively used before the 1950s. See Lomas v. W. Palm Beach Water Co., 57 So.2d 881 (Fla.1952) (approving the procedure for summary judgment); see, e.g., *593Leonard D. Pertnoy, Summary Judgment in Florida: The Road Less Traveled, 20 St. Thomas L. Rev. 69 (Fall 2007). It may have been that Florida lawyers, when drafting new rules in the mid-1960s, were not convinced that this relatively new tool for eliminating issues and claims prior to trial was sufficient to replace the common law rules addressing sham pleadings. Given that the federal courts have now operated quite well without this rule for forty-five years, I would suggest that Florida consider eliminating this common law rule.