In the novel Dune, ‘Men­tats’ are humans trained to mimic com­put­ers: human minds devel­oped to stag­ger­ing heights of cog­ni­tive and ana­lyt­i­cal ability.

With this in mind, you may be able to guess what’s in store at the Men­tat Wiki, which calls itself “a col­lab­o­ra­tive envi­ron­ment for explor­ing ways to become a bet­ter thinker”:

‘Men­tal Math’ teaches you how to cube and cube-root num­bers in your head (and fifth roots), while one mem­ory tech­nique pre­sented teaches you to hold a per­pet­ual cal­en­dar in your head (what day did/will a cer­tain date fall on?).

Cer­tainly gets those brain cells work­ing again.