Before you start, yes, I am a 'nerd'. If you aren't, what are you doing here? In the words of Shivertongue: who let you in?
Now, on topic, interestingly at University today in a lecture, I got my teacher talking on the subject of quantum mechanics and a few of the foundation rules of it. Now, you'll probably find this terribly boring, but I decided to put together a little demonstration as to why I feel that spren are related to quantum physics.
Firstly, the experiment. A beam of individual photons is fired at a wall directly into the center, that has two slits on either side, which at the same size:
--------------------|
----------------------<-slit
----beam-----> | <center
----------------------<-slit
--------------------|
You see? Now, ordinarily, you'd think that light would just hit the center and nothing would happen. Wrong. Photons are particles, unlike light waves, and so the can move. So, oh, ok, they'd just go through the two slits and the journey to the paper behind and cast light in two dots, parallel to the slits, right? Wrong? Yes, actually. Instead, the light particles spread out, and they hit each other, which causes interference. Eventually you get a pattern that looks like continual bands of light and dark, and it looks somewhat like this:
Cool huh? Right, out with the nerdy stuff. In with the 17S stuff. So, when you don't actually observe the path that the photon takes (it has to choose one and only one of the slits, presumably), you get this effect. However, when you make this adjustment:
------------------------|
--------------------------<-slit
----beam-measurer> | <-center
--------------------------<-slit
------------------------|
ie when you add an implement that is capable of measuring the path of the photons, with someone there watching as the photon picks which side it went to (this experiment was originally done to measure tendencies of movement of particles, by the way, not for this exact purpose), you get different results. Instead, the photons alternatively picks a side, and then for the two dots of light at the end, that you would expect without the above fancy pattern. So, if you observe it, the photons act the same, uniformally. This implies that when unobserved/measured, the particles take boths sides at the same time, effectively splitting and then reforming on the other side, to make the fancy pattern.
This phenomenon has never been explained (as it defies all laws of physics, as do all the laws of quantum mechanics). and the moment I heard it, it immediately made me think of one thing: spren. And that interlude in which the two people observe it and noticed that it becomes a uniform pattern, and yet when unobserved, the spren seem to move about randomly.
Do you think Brandon used this experiment as an idea to base spren's movements around? Or is it coincidence. Do you think that spren move this way in all environments, not just Roshar? And what do you think to the theory in general, as in, as it takes place on Earth? Surely it is extraordinary? And what do you believe actually makes spren behave like this, other than the fundamental principle of quantum mechanics:
Observation alters the outcome of the experiment.
Similar to the old adage: If a tree falls in a forest, does anyone actually hear it? Or just see the dead tree and presume that it fell?