The Teotihuacan pyramids started being built in 250 B.C. and finished in 250 A.D., taking 500 years to build.

Around the pyramids, ritualistic sacrifices occurred about every 50 years.

Talking about human and business performance, we say we sacrificed this to get that. But of course, the opposite is true too.

It’s not sacrifice that has a negative term, its that you traded your time to accomplish something.