In response to Michael Perelman's ope-l 4688:
Michael: "Suppose I time a heart surgeon. She works 3 hours. How much
abstract
labor does that represent?"
Three hours, if she works at normal intensity.
"I know that 3 hours of her abstract labor is
half of 6 hours. What else do I know from this exercize?"
Nothing, taken by itself.
Andrew Kliman (AX)