Dan Shipper’s thoughts on why estimating software projects is hard.

“So the site’s pretty simple, all it needs to do is X, Y and Z. You seem like a good programmer so I’m sure it will only take you a few days to put it together.”

Summary: The two heuristics humans use to estimate complexity don’t work for software:

• speed
• size

Link: I’m Sure It Will Only Take You A Few Days To Code – dan shipper via danshipper.com