OK - I listened to both tapes, and I must admit, the discussion got a little waffly later on - maybe not Sheldrake at his best.
Even so, the overall message to take back is that Sheldrake knows a lot of orthodox science and wants to fit Ψ into some extension of that picture. For example, he clearly realises at one point that in the reference frame of the photon, no time elapses between it starting its journey and arriving at its destination (disregarding the slight slowdown that it would experience travelling through air).
David |