With respect to a Lone Electron universe, let’s consider…
ACCELERATION/DECELERATION: None. The same argument applies as with velocity.
ARROW OF TIME: If there is no time experienced by the The State Of The World To The Lonely Electron, then there can be no arrow of time either. In short, the Lone Electron has no experience of a past, present, or future.
CHARGE: Yes, the electron has a charge of minus one or in other words a negative charge of one unit. However, in order for charge to be meaningful, it has to be acting with or against another charge of which there is none. So, does our Lone Electron have charge in this context or doesn’t it?
COLOUR: An electron is colourless. In any event you need photons, electromagnetic energy, light waves, to transmit (wavelength and frequency) what we (our brains) interpret as colour. Our drab, bland, colourless Lone Electron has no photons to transmit any information about itself, and there are no eyeballs and brains to interpret that information in any event.
ELECTROMAGNETISM: The electron is most associated with electromagnetism and the electromagnetic force. The associated force particle is the photon and electrons can absorb and emit photons (absorb and emit energy). However, in this scenario, there are no photons, so therefore there is no electromagnetic force. In any event, a force is only a meaningful concept if there are two of more particles involved, since, if you are the sum total of things, you can’t give off or receive a force.
ENTROPY: Entropy is a statistical concept where over time, left to themselves, things tend to go from an ordered state to a disordered state, like before-and-after pictures of a wild party. One electron does not make for statistical analysis, so the electron’s state of order or disorder is what it is. It doesn’t increase nor decrease. In fact it’s rather meaningless to philosophize over it.
EQUILIBRIUM: The Lone Electron is in a state of equilibrium with respect to its surroundings. It could hardly be otherwise since there are no other surroundings except nothingness.
EXISTENCE: Yes, it would be incorrect to say our Lone Electron didn’t exist. However, there’s nothing else around it to verify that existence or give any meaning to it.
GRAVITY: Since the electron has mass, it must have gravity. However, gravity only has real meaning between two (or more) objects with mass, like the Earth – Moon – Sun trilogy; or, in the most traditional of traditional scenarios, the Earth – falling apple scenario that, according to mythology, inspired Isaac Newton. So, in the Lone Electron scenario, it’s pretty meaningless to talk about gravity. In fact it might be meaningless to talk about gravity since gravity is equivalent to acceleration as shown by Einstein. Acceleration implies motion or velocity which in the context of a one electron universe is meaningless. Further, the (hypothetical) particle associated with gravity, the graviton, would be conspicuous by its absence in this Lone Electron thought experiment
