Curdog
For this position to be valid, your assertion/premise that others are unaffected by a transaction by two persons must be true...which, sadly, it is not.
For example, if one produces widgets at a cost of $1 and sells them to customers for $1.50 this pricing will affect another person whose cost to produce the same widget is $10.
Essentially, supply and demand economic systems stem from the consequences of other peoples transactions on you.
