Raiders, why do you consider raiding just not memory games ?

[Jeeqbit]

thing that makes me say that it's 99% memory is because there is technically 1% if one is totally blind progging a fight, and has to figure the solution to the puzzle first (which is what the guides do for you otherwise).

Also, blind progging to figure out mechanics now is often just recording your gameplay, and watching it back in slow motion so that you can see:
"oh, that's the donut AoE."
"oh, it's doing a spread there."
"oh, that mechanic means a stack"
"oh, that applies a status effect vuln so we have to be separated"
etc.

So a guide just stops you wasting your time wiping for hours doing the slow motion playback to discover what is the stack, spread, etc.