When you make a statement "This could be trouble..." what do you mean by it?

Trouble for whom? And if you say this you must know more about it.

Could they fit this into a cell phone or ipad or laptop? I do not think so. So my advise to you is not to worry for now.

Did you read the whole article? And if you did, why would you make such a statement? I am sorry but I do not understand your logic.

"Neural networks are fantastic things, but historically they operate on hugely inefficient clusters of conventional computers"

"While TrueNorth isn’t going to run your operating system any time soon,"

cheers