Every plausible but failed hypothesis (its been half a century now?) bakes-in an intractability that may become permanent for any relavant timescale. There is s

Every plausible but failed hypothesis (its been half a century now?) bakes-in an intractability that may become permanent for any relavant timescale. There is still some hope as cosmological observations feel less exhausted than particle physics. But its a very awkward admission of defeat after some fairly triumphant decades last century.