Hatfest: https://www.maths.ox.ac.uk/node/64321 https://www.maths.ox.ac.uk/node/64321 Registration is required, but free. I live in Oxford; I might rock up. I'

Hatfest: https://www.maths.ox.ac.uk/node/64321 https://www.maths.ox.ac.uk/node/64321 Registration is required, but free. I live in Oxford; I might rock up. I'd like to meet (or at least hear) Roger Penrose.