<:> Resources

• Database of Bongard problems - http://www.cs.indiana.edu/~hfoundal/res/bps/bpidx.htm

• Various works by Koestler:

Koestler, A. (1967). THE GHOST IN THE MACHINE. London: Pan.

Koestler, A. (1979). JANUS: A SUMMING UP. London: Pan.