I have to tell you, I've been in Silicon Valley for 23 years and I've never seen anything used at work besides caffeine and maybe a (company-sponsored) beer on Friday afternoon.
Outside of work, I know tech employees who used pot, LSD, mushrooms, 2cb, and (in the late 90s especially) MDMA. None of these had significant impact on their work, although those who did MDMA every weekend seemed a little flaky to me, even years afterward.
I've known a couple of people who combined intensity and dullness to an extent which might indicate Adderall usage, although I've also known completely drugphobic people who come off the same way.
Outside of work, I know tech employees who used pot, LSD, mushrooms, 2cb, and (in the late 90s especially) MDMA. None of these had significant impact on their work, although those who did MDMA every weekend seemed a little flaky to me, even years afterward.
I've known a couple of people who combined intensity and dullness to an extent which might indicate Adderall usage, although I've also known completely drugphobic people who come off the same way.