Perhaps older/retired engineers simply have more time and patience to put on hobby projects like this. I don't think there's such a large emphasis on software e

Perhaps older/retired engineers simply have more time and patience to put on hobby projects like this. I don't think there's such a large emphasis on software engineering; at least in the universities I've been to, software engineering is small compared to mechanical or electrical. There's also computer engineering, a fairly hardware-heavy program.