You could make that same argument to the hypothetical knight. Capitalism in the modern sense has only been around for 200 years. Just because you are unable to imagine a different future doesn't mean that one doesn't exist. What you are doing is no different than an appeal to tradition. You are sacrificing the virgin to the mountain god every year for reasons you can't fully grasp.

you're right that I have not imagined a different and better future syste,, but in the hypothetical someone does know of a different and better future system (assuming that we agree capitalism is better than feudalism), goes back to the past, and lies and says there is not a better system.

Second of all I admit I don't know of a different better system, I do not say I like the present system especially, although I get the feeling you must think that I do not being able to think of a better one.

>You are sacrificing the virgin to the mountain god every year for reasons you can't fully grasp.

and you are evidently good at insulting people and feeling superior when they admit they don't know of a better way without providing any concrete arguments for a better system. Must be nice.