What we perceive as time is an artifact and in fact only indicates the numerical change of matter in space. This hallucinatory thought comes from Amrit Sorli, Davide Fiscaletti and Dusan Klinar from the Slovenian scientific research center Bistra in Ptuj. According to them, only space is real.
Spacetime, according to Einstein's general theory of relativity, consists of three dimensions of space and one dimension of time. To accurately describe the position of a point, you must therefore mention length (x), width (y), height (z) and time (t). Mathematically, spacetime is described in Einstein's theory as one Minkowski space with metric (1,1,1, -1): the faster you move in this space, the slower time passes. Hence the famous twin paradox and the like. If you move as fast as the light, time stands still.
The trio of physicists argue that we never measure time directly, so that it is therefore pointless to speak about time as such. We only measure vibrations, frequencies and the like. In other words, changes in material things. Clocks, for example, rely on vibrations in a crystal, an atom or (older models) the swinging of a pendulum or streams of water or sand. When we measure something with the help of these clocks, we only compare the changes in the clock with the changes in the material object. Time is, they think, only a fourth spatial dimension, the (causal) sequence in which events take place. At the quantum level there would then only exist three spatial dimensions. From this comes our illusion of three spatial dimensions plus time dimension.
Zeno's paradox cracked
The Greek philosopher Zeno from Elea coined his famous paradoxes thousands of years ago.
This theory also puts an end to a problem that has plagued philosophy for more than two millennia. In Zeno's running paradox, the fast classical Greek hero can Achilles never overtake the slow tortoise because the tortoise has always moved forward a bit by the time Achilles has reached the previous position. This process can continue indefinitely with classical, infinitely divisible space and time. When time is seen as the numerical sequence in which events occur, this paradox no longer exists. Changes in material things such as clocks, hares and turtles are not infinitely divisible. If you choose the time interval short enough, for example the Planck time (the time in which light the Planck distance physically, there is no change, so this time interval (or shorter) has no physical meaning (and therefore does not exist). This means there is a minimal effective time interval and Achilles can catch up with the turtle.
In the nineteenth century the Irish mathematician and physicist succeeded William Rowan Hamilton, much loved by physicists because he invented the extremely handy Hamiltonian that makes complicated calculations much easier, already in describing motion without time. So the thought is not that crazy. The researchers are currently trying to rewrite quantum mechanics in such a way that time no longer plays a role.
Their theory also means that time travel is not possible. After all, the sequence of events remains the same.