[Numberwang]

I don't know how else to help you. You are delusional, and it is caused by your lack of a basic education in physics. Studying physics will help you realize that. The only persons that are condescending are the ones going off in an argument without first putting in the work needed to not waste everyone's time.

[lolo_]

It's not worth responding here really so this'll be the last - you assume calories in and weight out are perfect measures of energy conservation in a closed system. Here's an experiment that refutes your position despite your constant insults - weigh yourself. Drink 1 litre of water. Weigh yourself again.

EOF

[Numberwang]

I never once insulted you. Your way of taking offence suggests this is very personal for you. I hope you are alright.

Re your argument.. fill up your car on petrol and then check the weight in the specs in the manual to see if they have changed.