d) Activity X = Labor
e) Labor = Value
f) and Activity X = Value
g) by substituting our variable back in we can see that we have taken our original identity and logically derived that digging holes in the ground and filling them back up again creates value*.
Don: I don't know if LTV supporters believe that *ALL* labor creates value. They seem to think that *ALL* value is created by labor, but it does not follow that *ALL* labor creates value. I think this is a problem with your proof.
Exactly, Don. JJ has erected a (copious, pretentious) straw man on his own (misleading) terms---in order to posist that 'all exertion' = equals use-value which (if true) produces some fairly ribald predicates. But, as you have disinterestedly observed, JJ's whole presentation went splat somewhere around here.