Full question:

By 2050, it will still not be possible to increase a healthy adult human’s IQ by at least two standard deviations in less than 30 days.

One of the questions from https://jacyanthis.com/big-questions.

Resolves according to my judgement of whether the criteria have been met, taking into account clarifications from @JacyAnthis, who made those predictions. (The goal is that they'd feel comfortable betting to their credance in this market, so I want the resolution criteria to match their intention.)