…is a clock that’s wrong. Randomly fast or slow.
If we know exactly how much it’s wrong, then it’s not so bad.
If there’s no clock, we go seeking the right time. But a wrong clock? We’re going to be tempted to accept what it tells us.
What are you measuring? Keeping track of the wrong data, or reading it wrong is worse than not keeping track at all.
Reblogged from: here