Miles, you are way too soft. Half days? Feh. What about evenings off? What about all of those meal breaks and bathroom breaks and sleep? People need to skip those in the name of progress. What is needed here is a chair with a hole in the seat, a bucket underneath, and a vat of Flaturin(TM) with a tube to drink from. Maybe some medications or electrodes or something to obviate the need for sleep. Anything less is unacceptable.