This is as much to remind myself as it is to spur a discussion.  "I'm not writing it down to remember later, I'm writing it down to remember it NOW" - I think the saying goes.

The economy is humming, the country is nearing full employment, interest rates are rising. This is just a kind reminder to let the numbers speak for themselves and write your business cases conservatively. While the econonomy's growth may have room to run, one day things will turn and we'll be on the backside of the hill headed towards recession.

It only goes south from here economically, so be sure you are writing your business cases accordingly and preparing for that rainy day!