Full employment meaning that everyone that desires to work at the wages that they would be offered to do so, would indeed be working.
“Would be offered” in what counterfactual universe?
Without counterfactuals: assume Mr X is willing to do job Y at wage Z, and has as much skills as Mr A. Then if Mr A has job Y at wages above Z, and Mr X is unemployed, we do not have full employment.
Full employment meaning that everyone that desires to work at the wages that they would be offered to do so, would indeed be working.
“Would be offered” in what counterfactual universe?
Without counterfactuals: assume Mr X is willing to do job Y at wage Z, and has as much skills as Mr A. Then if Mr A has job Y at wages above Z, and Mr X is unemployed, we do not have full employment.