Depends what you mean by “usable.” Are you going to ship it in military hardware? No. But I built a block based program connected to a motor that gave kids a ca

Depends what you mean by “usable.” Are you going to ship it in military hardware? No. But I built a block based program connected to a motor that gave kids a candy if they guessed the number that the computer was thinking of in less than 6 guesses. A 4 year old invented binary search within 10 minutes.