..... not too sure who that Prof fella is. You know that you don't have to wait to undertake experimentation like this; as Tonmo community such an experiment could be undertaken (although there would be many different tank environments/few controls).
Determine the species, come up with a series of simple tasks, and see what species does what, in how long, and whether any particular octopus species is a savant.
You'd all have to introduce some controls (it would best be done at one laboratory, but for now why not experiment across the Tonmo community). You could iron ouyt a few problems this way, before undertaking a larger-scale controlled experiment.
Cheers
O