Another point, days don't translate to effort or even time. I had to bring up a php site in 3 days. I charged 55 hours in 3 days. Another time, life was slow

Another point, days don't translate to effort or even time. I had to bring up a php site in 3 days. I charged 55 hours in 3 days. Another time, life was slow and we were benchmarking long runs. I worked less then 40 hours in those 7 days. Days!=time_spent