Design Flaw #1: Please enter your weight
Wednesday, February 15th, 2006When i stepped on the treadmill this morning my hands automatically punched 75kgs and i started working out as usual. Been using this for few months. Its a bit old but looks cool. The LEDs, the statistics at the end of the workout, the variable workout programs, everything…except one vital issue - am not 75kgs.
I really don’t know why the designers of my treadmill couldnot add a weighing machine to it. May be the latest ones might have (let me know if you come across one) but isn’t it something simple to do in the first place? Am already standing on it so whats the big deal to guage the pressure exerted and convert it to kgs? And if those tiny LEDs were showing results of complex algorithms based on my weight as 75, then you know everything is invalid now. I started working out few months back, but right from day 1 i have been punching the weight as 75kgs (courtesy: health checkup that i did many months back) and i really don’t know whats my weight today. Am not looking for a very accurate weighing machine (am not selling gold and it doesnt matter if it shows a few grams more or less) but i want to see whether am decreasing in weight or gaining weight.
Now forget the treadmill and think about your product. This is a good casestudy for all designers especially software ones. Do you expect your user to provide the right input OR do you go one up and also facilitate her to get the right inputs? Many just stop with step1 the way my treadmill guy did.

Design Flaw: Expect your user to give the right input
Rectification: Go one up and facilitate the user to get the right input




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