A friend of mine related a story about her brother, who had suffered an injury years ago which weakened one arm and limited the amount of weight he could carry. This was particularly notable because her brother was in the construction business.
One day, on a job where concrete blocks had to be moved from the delivery site to the actual work site, he was helping several other workers. But while he could only carry one concrete block at a time, they were each carrying two.
The site supervisor came over and asked her brother why he was only carrying one block while the others were toting two.
He replied: “Because they’re too damned lazy to make two trips!”