Well, I ponder the Mandela effect... From what I can tell, the whole was deliberately manufactured by the moneyed psychopaths in control.
I have seen no evidence "different worlds" - so either I'm steadfastly here, or... [shrug]
But yes, the aether is a sea of energy, and We can tap it. But it is hidden for the threat free energy is to the accounting for Our energy added into a system (paychecks, money), which is Their tool to power, those moneyed psychopaths.
This is specifically why our higher-selves left in the Mandala Effects. To give everyone a little hint that there is something bigger going on here. It is not just people's faulty memory.
I have done a lot of healing which involved changing the past. And it it interesting (terrifying) when other people remember that past that you changed to.
Well, I find it interesting that People have found old things and they show it as People remember, not what We are told today. Like the Fruit of the Loom logo. They claimed it never had a cornucopia but at least one Person found an old item of clothing and Lo! the logo had that cornucopia.
I will persist in giving highest probability that the moneyed psychopaths deliberately rewrote "history" - testing the 1984 rewriting, seeing if They can do that with Us.