Nice site! I think that it could also be a nice feature to sum the number of hours that a thinker did each type of activities. Did Voltaire sleep more than me?

Nice site! I think that it could also be a nice feature to sum the number of hours that a thinker did each type of activities. Did Voltaire sleep more than me? Do I exercise as much as Victor Hugo? These questions could be easily answered with this small addition.