An interface is humane if it is responsive to human needs and considerate of human frailties.

I've moved on, grown and learned in the years since then, and am designing interfaces that make the Mac's GUI feel as clumsy to use as the Mac made the old DOS-based systems feel primitive.

As far as the customer is concerned, the interface is the product.

A computer shall not waste your time or require you to do more work than is strictly necessary.