Yeah, they like to pretend this. For a while it's even true--it takes time for that minimum wage increase to percolate all the way through the economy. That doesn't mean it won't show up eventually, though.What do you mean I have "never addressed" this. I have addressed it in raising the fact that the cost of production is much more than just labor wages. Some study indicated raising wages to $15 an hour impacted value meal prices by a buck or so.,. ie raising wage 50 to 100% impacted the final price by much lower percentage, because the cost of production involves buildings, food, management as well. Secondly, the issue can be raised as to why inertia is an acceptable reason to pay people a wage they can't remotely hope to live off of. Yes, we can have more jobs if wages are lower, but the heck good is that for our economy?
In the long run minimum wage increases simply lead to enough inflation to neutralize them.
Something being hard to measure doesn't make it not exist.The question becomes if it is too difficult to measure, what is the significance of claiming it exists? While a wage hike can influence a desire to reduce the number of people working, the number of people working also impacts the amount of production one can have. A fast food joint can limit the number of people at a joint to just one... but one person can only fulfill so many orders. Automation in definitely an issue for lower wage workers, but usually the expense of automation is better when replacing higher paid workers (see coal mining). For fast food, you need people to prep the food. That simple. The fewer you have, the less food that can be prepared. The math is simple.Just because our ability to measure this is very poor doesn't mean it's not there.
As for the number of people at fast food. Off the top of my head I'm thinking of drink machines where you simply push a button for the cup size and it knows how to fill it, and drink machines on the customer side, you get an empty cup. I'm sure there's more but I've never worked fast food to see what's being done.