[glimshe]

Markets are competitive if and only if P === NP!

Now seriously, I wonder if AI collusion/use in investments would add to the market inefficiency and create opportunities for observing investors.

[astrodust]

NP factorial sounds like NP-ultra-hard.

[emil-lp]

NP! should be something like NP^NP, which is well known to be Σ^2_P. Slightly larger, but still inside PH.