Person A and person B have to do the same exact task e.g. fix a car or whatever. It takes person A one hour to do the job. Person B is more skilled and experienced, and thus can do the exact same job in 30 minutes. Correct me if I’m wrong, but by your logic I understand that person A should be paid double of what person B is paid, because they gave double of their equally important time. One could argue that since it’s the same job being done, they should be paid the same. I would argue person B deserves even more pay for the exact same job that person A did, because they SAVED time. I agree time is valuable, thus doing a job faster is more valuable than doing the exact same job but slower.