The Diffusion Christmas Quiz:

Schrodinger's Cats vs Pavlov's Dogs

in a Winner-Takes-All contest.

Hosted by Chris Stewart,

with Tilly Boleyn, Vanessa Gardos,

Shona Blair, Catherine Beehag,

Celine Steinfeld, Jacqui Pfeffer,

Jacqui Hayes, Ian Woolf, Darren Osborne,

Derek Muller, Charles Willock.

Produced by Chris Stewart, research by Tilly Boleyn.