Inclusive OR? Wtf?

[Angrboda]

Here I had been thinking to myself that it would be better for me to go after a degree in psychology rather than a degree in computer engineering, however the thought of designing logic circuits excites me. Back when I was in school, most logic assemblies were built out of NAND gates, as that was the simplest and most cost-efficient gate / transistor design. Maybe that's changed, I don't know.