Think about making coffee in the morning...

What is required for you to do this? Water, beans, coffee maker, filter.

BUT... where does that water come from? How did it get to you? How did you coffee maker turn on with a push of a button? Where does that electricity come from?

The complexity of a functioning society runs deep... and don't even get Stevenson started on the complexity of flushing a toilet (x 300,000,000).