And yet, superforecasters often manage to avoid both errors. They wouldn’t be superforecasters if they didn’t. So how do they do it? In the nineteenth century, when prose was never complete without a sage aside to Greek mythology, any discussion of two opposing dangers called for Scylla and Charybdis. Scylla was a rock shoal off the coast of Italy. Charybdis was a whirlpool on the coast of Sicily, not far away. Sailors knew they would be doomed if they strayed too far in either direction.
