There are, as far as I’m aware, two forms of time travel any one of us can take part in any time we choose. The first is the unfamiliar. Consider the times you have taken a familiar commute to work and thought to yourself, how on earth did I get here? It appears very little time has passed, and you have no memory of the events that have occurred. This is because, when faced with the familiar, the human brain knows the body can perform without the need for the mind to attend. At the most fundamental level, time is simply the amount of attention one gives to the universe.