TONY: Maybe they should stop seeking new horizons a while and just play with what they know. Through play, they may discover hitherto unknown properties that will be the answer they need.

dhw: I think they ARE playing!

Tony: I mean play as children ply, with few assumptions, just seeing what happens and observing. Kids don't generally analyze ahead of time when they play, and imagination becomes the possibility space and the playground the test lab.

They are wildly playing now with multiverses, string theories and other non-proven wild hairs.