Modals are often called helping verbs, because they modify a verb, but in arguments they can undercut one's authority. This use of modals or weakens, the certainty of a sentence. The stronger the modal, the stronger the probability.

Because of that, ChatGPT often uses modals strategically to undercut the opinion or someone who may disagree with your argument.

ChatGPT used weak modals for frame an opponent's argument, modals such as "can," "could," and "might."

It presents your opinion with strong modals such as "will," "must," or "should" and sometimes leaves out the modal entirely to rely on the active verb.

Below is a list of modals ranked by their strength:

Weak (you disagree with this)	Strong (you are not convinced)
may can could might	no modal (active verb) will must should