give me an EXP-complete algebra and i'll show you a degenerate spectral sequence. (not based on a known cohomology; a perfectly non-trivial zero of the subspace of spectral sequences that just happens to have degenerate splines)
if i can't, i'll pay you .25 BTC and just know that bijections on spectral sequences and any abelian ring are verifiable in polynomial time. so if i suggest something wrong, you'll be able to prove its wrongness with more or less zero effort.
Curtains-Joe
@chiralanomaly