A hypothesis is literally just a detailed guess at something that is testable through science. You have to be able to point at some data when you make that guess, but it's still just a guess. "Some data" could just mean data from a single test. It has just as much detail as a theory, it just has not "stood the test of time" yet

A theory is what you get once you have a hypothesis that has been around a while and despite numerous attempts to disprove it, has not been disproven, yet has also not been proven. So much so to the point where science generally recognizes it as truth, as if it were fact, except that they keep it in the back of their mind (or at least they should) that it is not actually a proven fact.

>Tbh I just kind of assumed that they somehow blocked the signal from getting through

Nope! That is what intuition would say, but in reality, it just overpowers the signal you are trying to receive with noise (think gray static on a tv along with that characteristic hissing noise) that is at a higher power/amplitude/volume than the signal itself

Imagine you are trying to have a private conversation with someone who is standing two feet away from you in a silent room. You can whisper to reach other and you will both have no problem hearing each other. Now imagine you are standing further away. Much further away. You may need to yell now just to hear each other, if you are far enough away. Now imagine again, that you are back to being two feet away from each other, but this time instead of being in a quiet room, you are in a room full of the sound of jackhammers revving chainsaws horrible static sounds and people screaming, alarms blaring, any and every loud noise you can imagine all at once. Good luck trying to hear each other even if you scream back and forth even if you're standing two feet away, let alone further. There is too much interference from the loud noises covering up the actual stuff you are trying to say/hear.

Well, what a jammer does at a basic level, is essentialially create those loud noises to cover up the actual signals sent by the two transceivers trying to communicate, so that they can not "hear" each other.

Something as simple as a leaky microwave oven (as in it does not contain the microwaves within it and they leak out) can cause interference and act as a jammer to 2.4GHz wifi, as a microwave oven uses microwaves that are the same frequency of 2.4GHz. a wired connection works much differently and would be unaffected.

Kinky