Do we weigh more on the carpet than on a hard floor ?

After my huge binging spree for the past 6 months, finally I decided to lose some of that fat I gained and so I have religiously, started going to gym and avoiding all my favorite, fatty food... and suddenly today morning, I noticed that I was weighing a pound more than what I was 2 days ago... I just could not believe that, because I had been on a healthy, calorie restricted diet and have been burning around 800 calories a day in the Elliptical... And so, all through the day I was thinking about whether I had lost some muscle due to my rigorous exercise and hence gained some weight in spite of my low calorie diet ? Or was I burning all fat but my Carb reserves in the liver and the muscles were full ? I was just puzzled... and I still believed that I could not have gained a pound of fat and there should be some explanation!

Finally, at night I remembered that they always ask you to weigh in a hard floor. Then I remembered that the last time I checked it, I had placed in the hard bathroom floor. Then, I weighed myself in the bathroom and presto! I had lost a pound in a few minutes!!

And then I find that, it is common thing to notice that the scales show an approximately 10% more weight on a carpet than on a hard floor... And as explained here, a Cambridge university prof has found out why it is so (at least for the analog ones, though my digital one also behaves the same)... It seems it has to do with some bending of the fulcrums that collect the weight and send it to the lever or something like that...

Interesting to know... When the instructions on the scales do mention that you should use the scale on a hard floor, I wish they can also add that you will weigh more in a carpeted floor too. It would save a few from unnecessary worry ;-)