However prepending is possible. Figuring out 'the true answer' is in many cases impossible (what is the meaning of life, is x beautiful etc) and in many others

However prepending is possible. Figuring out 'the true answer' is in many cases impossible (what is the meaning of life, is x beautiful etc) and in many others merely several orders of magnitude harder than current tech can cope with (is there a polynomial time solution to TSP, why is public discourse so vacuous these days). So if that's what Google is gunning for it's going to be broken for a long time.