right, yes, but my question was meant to be a bit more general - this and various other results have shown that it is possible to train a deep net to do a specific task very successfully - my question was if it's possible to train it to do two or more tasks as successfully or will the network then have to be exponentially larger. I suppose there is no known way to "combine" trained networks together.
The standard is to have each neural net be trained just for one task, as you say; there may be research into multi-skill neural nets but I have yet to see any. AlphaGo in particular is extremely specialized to Go, even in terms of how the algorithm is implemented.
