The effect of these tiny random events would propagate upwards and perhaps cause an apple to fall from a tree. A sub-atomic particle vibrating randomly in a certain way could fire a neuron, giving you a new thought.
Even if life isn't determined, can you really say there is free will? You can't control the way that sub-atomic particles will behave, you may have the illusion of control in your head but at the end of the day it would come down to physics and randomness.
Personally, I don't find this opinion a healthy one, so I tend not to dwell on it much.
This is why I downvoted the parents by the way. I feel like there is no safe discussion when it starts with strong opinions ("which is completely untrue"). There is no right or wrong here so better be open minded.
No, actually not. The current state of research in quantum physics makes it look like there is randomness. But the thing about randomness is: Nobody has any control over it. So again, life (and the universe) may not be fully deterministic, but we have no absolute responsibility for whatever happens (only a relative one, relative to our culture, that is).
> Also it assumes no social interaction with others
No, of course we have social interactions, which influence us. But they are themselves a function of 1) our genes (i.e. whom we approach or not) and 2) our initial location (with all its properties).
Again, you're stating things as facts that there's no reason to believe are actually true. There are models in which quantum randomness does allow for free will, and no one knows whether they're right.
This has the strange consequence that only you have free will, as perceived by your own consciousness. I don't think this makes any less sense than anything else related to quantum physics, but it is definitely weird.
A reasonable disagreement is pointing out you're assuming zero randomness in the universe (which includes in your head, and everyone elses head, I'm not a mind-body dualist) so no development of unique new ideas, or having unique new experiences or perceptions, both of which feed on each other to generate new echos of randomness long after something interesting happens. Also it assumes no social interaction with others however distantly linked to "interesting random people" even if the individual and their direct contacts are in fact really boring (aka effect of arts in general).
That is a much more productive form of disagreement than hitting the down button.
(Edited to add I think you're getting downvoted because of a cultural-linguistic meme or bug that whenever someone in the USA spins a story with "can't or don't judge" that usually means its a known and obvious statement of fact that they did something they and everyone else knows is wrong, and they have no better spin option. Last (modern) refuge of a scoundrel. Thus the downvotes)