The 8 hour work day was with physical labour in mind and makes much more sense in that context. Of course there are limits to office time productivity too and t

The 8 hour work day was with physical labour in mind and makes much more sense in that context. Of course there are limits to office time productivity too and the stress factor of office jobs has considerable spread. That said I'd have 11 hours coding work over 8 hours of labour any day.