Exactly. Most physicists now believe that there are 11 dimensions (not only our 4 dimensions, including space-time). Can you comprehend that??!
Also, Michio Kaku, in his great book Hyperspace, has a thought experiment similar to your beetle story. He realized that fish, swimming around in the water, would / could have no conception of the world outside of the water. Y'know, the world of our reality.
And he said that if one of the fish was caught by you and pulled out of the water, all the other fish would believe he had completely vanished. And they could prove that he did vanish, just by searching the entire lake.
Then, when you threw the fish back, all the other fish would be very shocked at his sudden reappearance.
And when the fish told them about this whole other world "outside of the water," they would not be able to believe him,
Makes you wonder if we are just fish swimming around, unable to get out of our "water."
I love that analogy! Quite thought-provoking!