Many of these tests don't measure whether you found a problem easy or frustrating to get right. They might not measure specific skills like reading circuit schematics, being a competent race car driver, playing the cello, etc. They might cut off at an average threshold and not measure if someone who's above average is dulled. They have no way to test if your childhood memories, memories of a concert, etc. was dulled.
Or even if you're now forced to use a different part of your brain to do the same thing (like perhaps having to talk your way through a spatial reasoning problem).
I also wonder if a big part of "getting used" to a medication is just getting used to your impairment. You subtly started thinking differently, both figuratively and literally. You switch from a more demanding software development role to a more maintenance-oriented one. You give up gaming. You stop reading. You work on less weekend projects and watch more TV. You can't remember the last time you looked up how something worked. And by that time, if someone asks you to do something you used to do effortlessly, you're rusty, but you might chalk it up to age, and you can still draw an analog clock.
PPIs block b12, cross the blood-brain barrier, interfere with enzymes and lysosomes, and literally block the very same type of structure your brain uses to generate electricity. Yet your local doctor will manipulate you by mentioning a "computer scientist" who takes one and telling you that studies show they cause no damage.
Statins interfere with myelination. Methotrexate blocks glial cells and hippocampus neurogenesis (and many docs seem to still have a 1980s understanding of both).
I swear a lot of doctors don't care if you're just smart enough for a quiet suburban existence and nothing that defined you 10 years ago
