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To make things more confusing, for most physics equations, time can go in either direction (forward or backwards, +t or -t). This doesn’t really match with our everyday experience, even though the equations work out. Suffice it to say that so far, physicists have not been super helpful in improving our everyday understanding of the flow of time, although they are working hard on it.c What about philosophers? If you think time is completely subjective or mental and does not or cannot exist in the physical world, you are in good company with the likes of John McTaggartd and St Augustine.e In contrast, if you feel that time is both a physical fact as well as a mental experience, you will be in good company with most present-day philosophers, who think of time as the thing that describes how change happens; the thing that we try to measure by using a clock.f That’s not really clear either, but it seems a bit ahead of the physicists – maybe. How about the psychologists and cognitive neuroscientists? Most of them focus their investigations on the mental experience of time as opposed to physical time. People generally agree that there is a kind of order to the events we experience in our lives, which, when put together, we call the flow of time, temporal flow, or the “stream of consciousness” as psychologist William James famously put it.g Many psychologists and neuroscientists studying time and time perception try to understand this mystery by trying to figure out how the mind and brain create a sense of temporal flow.h The subjective sense of temporal flow is all very interesting, but it won’t get us precisely where we want to be, which is to understand how precognition of actual physical future events might actually be possible. Understanding the science of precognition can be thought of as understanding how we might access information about events that occur in the future of our own personal temporal flow, relative to our own personal “now”. This sounds like mental time travel rather than physical time travel, and that is a reasonable way to think about it. It could even be completely accurate. But you can also think about the science of precognition in physical terms, as trying to understand how future physical events can influence past physical events. Either way, when we have premonitions, it feels as if the future is pulling us forward both physically and mentally.
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Theresa Cheung (The Premonition Code: The Science of Precognition, How Sensing the Future Can Change Your Life)