I'd agree with him about solar power, which seems on track to do exactly what he predicted, with
an exponential decrease in cost / price consistent with becoming the cheapest form of energy in 3 - 5 decades.
Not exact matches
The
exponential growth of the use and availability of smartphones and tablets, combined with the
decrease in acquisition
costs of these devices, make a suitable learning tool for special needs children.
If you wish, you could do some calculations around it, using 2015
costs and appropriate assumptions WRT
exponential decreases in same going forward.