The initial postulate of the first law of thermodynamics is the law of conservation of energy:
The energy of an isolated system remains constant under all changes occurring in this system or, which is the same: energy does not arise from nothing and cannot be converted into nothing.
What is this me?
When you earn, someone loses and vice versa.
Everyone wants to buy cheap and sell expensive, but there must be someone who will lose from this and as a rule it is those who have less knowledge and patience.
Think about this when you feel like accusing everyone of fraud.
