I graduated EE with ('understanding' but) bafflement that radio works. Like just plain old amplitude or frequency modulated radio. Madness.

I work with software now/currently. I'd be surprised it all works if only it wasn't so frequently clear that it doesn't! I suppose the idea of updates has been quite quickly ingrained in the consumer mind - software bugs are somehow more acceptable, seen as just 'to be fixed' rather than 'broken' or 'poorly made', 'not very robust'.