Quran 2:282 does prescribe a different witnessing arrangement for a particular kind of transaction, but it does not declare that a woman's intelligence or moral worth is half that of a man's. The verse concerns documenting debt contracts, not a universal rule that every woman's testimony always counts as half.
Why critics see an unequal rule
The objection is serious: the verse permits one man and two women in place of two men, and explains this by saying that if one woman "errs" or forgets, the other can remind her. Read as a general theory of human value, this seems to institutionalize the idea that women are less reliable reasoners. When combined with the fact that some daughters inherit half the share of some sons, critics see a broader pattern rather than an isolated legal detail.
What the verse actually says
And bring to witness two witnesses from among your men. And if there are not two men available, then a man and two women from those whom you accept as witnesses, so that if one of them should err, the other can remind her.
Quran 2:282
The subject of the verse is a deferred financial debt: write it down, appoint a scribe, and use witnesses so disputes are less likely. Classical scholars therefore treated this as a rule connected to financial documentation, not as a mathematical statement that one woman's word is always worth half a man's.
The verse does not say that women are naturally foolish, morally inferior, or incapable of giving sound testimony. Its stated concern is the possibility of error or forgetfulness in a contractual setting. Classical commentaries also connected the arrangement to the social circumstances addressed by the verse, including women's lesser participation in commercial dealings in that society. Whether one finds that rationale persuasive today, it is different from claiming that a woman's mind is inherently defective.
It is not a universal law of testimony
Islamic law does not use one single testimony formula for every case. The details differ according to the type of matter. In some matters women testify alongside men; in matters known particularly through women's experience, female testimony has a distinct and essential place. The legal rule in 2:282 cannot simply be transferred to marriage, criminal cases, family disputes, or every statement a woman makes.
Inheritance also cannot be reduced to "women get half." In some arrangements a woman receives half a comparable male share, while in others she receives an equal share, a larger share, or inherits when a comparable man does not. These rules are part of a wider system of financial duties and family obligations, not a measure of human dignity.
Thus, the verse does establish a gender-specific evidentiary rule for a defined financial context, and someone may still debate its application in changing circumstances. It does not establish that women are half-human, half-intelligent, or universally half-credible. Those broader conclusions go beyond what the verse says.