You are right, I don't know that, so while I can't falsify the anti-amphetamine claim in a rigorous scientific way, I can still point out that not all amphetami

You are right, I don't know that, so while I can't falsify the anti-amphetamine claim in a rigorous scientific way, I can still point out that not all amphetamine users are spending their late night tweaking sessions on mindless tasks. That should be enough to at least spark some curiosity about the drug having some possible benefits, at least in moderation. I think it comes down to a matter of values, i.e. the long-term constant health of your physical brain vs. the benefit from getting extra bursts of energy to focus on immediate work. Not something science can really answer.