Comprehensive Sketches brief:
breaking down main information (year, months, weeks, days, date, hour and minutes) > product is big (wall calendar) > product waste too much paper > calendar turned into a box > idea rejected (busy people = no time to build boxes) > tried to make it small > but still too much paper to waste > got rid of the comments area where people write down appointment details > final.
My calendar aim: make it as clear as possible, neat, legible, easy and quick to use.