Also wrong. You can always destroy value by making a mistake. Trading and then realizing you made a mistake, just like investing labour and then realizing you

Also wrong. You can always destroy value by making a mistake. Trading and then realizing you made a mistake, just like investing labour and then realizing you made a mistake, does not create value. Trading is not special in this regard. Value can be created either way: through labour or trade. Regardless, your statement that all wealth is created by trade is false.