Things start to happen. Ideas come to light. You measure. Make marks. Theorize. Erase marks. Re-measure. Re-mark. Re-theorize..... sometimes for way too long. To the curious bystander, this process must look incredibly boring and painfully nonproductive.
Aah. The pivot. Designers of full suspension bikes aren't the only ones loosing sleep over just EXACTLY where the pivot point should be. It's equally as important on a 100lb wall of tools that will swing into or out of the work space.
At the end of the day, you have little to show for your efforts. The pile of reciepts on my desk would indicate one of the greatest undertakings of mankind. The inside of the van, however, looks like someone merely left some wood in the back and dropped a toolbox in the front, kicking its contents around before leaving at end of a very long day.