You claim that group B is necessarily unfalsifiable is false. Card and Krueger's work is evidence your claim is false.You are cherry picking. You arbitrarily have divided the data into two sets: one point which you claim supports your view, and all the other where you hand -wave away the result that conflict with your view. You hand-waved the Card-Krueger results based on your ignorance about their methodology.
Furthermore, you keep mentioning this "Group A" point without any reference to the actual time frame and context or how it actually supports your position.
The point is it has never been shown how we could observe an effect in most cases. The group B data is unfalsifiable and therefore worthless. And group A has been discussed on here before, I figured you would know it. American Samoa--a good portion of the population was working for minimum wage and it suddenly jumped considerably.
No, I am showing how attention to context matters. If raising the minimum wage so obviously caused job losses, the empirical work would be clear. It isn't. That's because the real world is much messier than the ideal world of ECON 101 demand and supply market equilibriums.That is my point exactly. It is difficult to parse these things out. It really depends on the data and context. So, your cherry-picked (and undefined) one point really isn't much evidence of anything.You're showing all sorts of things that will muddy the water, not make it easier to see.
You're continuing to show how unfalisifiable your position is.
I think that it is no surprise that in the short-run, small or medium changes in the minimum wage have little effect on hours worked or job loss because many firms cannot quickly change their business operations - it takes time to make the adjustment without unnecessarily losing revenue and/or customers. However, over longer time periods, firm may adjust their business model.
The point is you can't prove it's zero--you can never prove zero. All you can do is prove it's below the noise floor.
The problem here is that anything other than huge changes in minimum wage employment are normally below the noise floor. A failure to detect them is expected. To fail to detect what you shouldn't be able to detect warrants a no-bull prize, not a Nobel prize.