As someone who is struggling with ADHD and tried Ritalin at one point. The Ritalin did not really change anything for me, I was calmer, but it didn't help me get a better grip on my life so to say. Do you think there is a chance this would be different for other stimulants? Just looking for some experiences people had I guess.

A study I glanced over a while ago said something like 40% of people respond to dex or ritalin, around 80% to either (I'm in this group but dex had more annoying side effects), and the last 20% to neither (but there is other stuff out there). So it's definitely worth trying both branches of the common meds first. You should also talk about dosages because there is titration period where they need to monitor and adjust to see how your specific body responds.

I think it's worth trying. I started with Focalin but found Adderall works better for me. It's a little different for everyone.

Knowing an upper bound means you know that the best solution for the problem takes at most that much work. It does not mean that you can’t find worse solutions.

Sure? If you're slow on purpose that doesn't affect the upper bound set by the "obvious" method.

I think they’re replying to the claimed upper bound of n^3. I’m not actually sure what that means.

see schoolbook algorithm for the n^3 bound: https://en.wikipedia.org/wiki/Computational_complexity_of_ma...

It comes from directly applying the definition of matrix multiplication on a square matrix.

I'm not sure how to phrase this better than saying it's the bound set by the obvious method. Are you familiar with the obvious method of multiplying a matrix? It's n operations for each cell, and you have n^2 cells.

Being worse on purpose is always possible, but it doesn't change that bound.

It's the "obvious" upper bound, not the "how did you even get here without noticing the obvious method" upper bound.