Prices. I was really into drones in 1998, when I was in the third grade. I wanted one so bad...I figured I could get one (a $600 remote control airplane) if m

Prices. I was really into drones in 1998, when I was in the third grade. I wanted one so bad...I figured I could get one (a $600 remote control airplane) if my Golden Retriever had a few $400 puppies. But lo, it was out of reach. So were remote control helicopters. My mother told me about a remote-control sailboat, but I didn't care...it had to move around in 3-D, like a submarine, to catch my attention. So, yeah, prices. Right now, I'm eyeing a Physical Random Number Generator from ID Quantique for mathematical experiments, but those are like $1500 dollars. Nuts. I think the big plus in technology is that yesterday's expensive impossible is today's affordable plausible. I remember tiny remote control helicopters going for $20 recently.