The concept of time dilation, as described in the theory of relativity, may seem counterintuitive and can be difficult to grasp at first. However, it has been experimentally confirmed and is a well-established phenomenon in physics.
In the theory of relativity, time dilation refers to the fact that the rate at which time passes can vary depending on the relative motion of observers and the strength of gravitational fields. This means that time can elapse at different rates for different observers or in different gravitational environments.
To address your specific concern, it is important to distinguish between the measurement of time and the experience of time. The concept of time dilation does not imply that time itself is slowing down or that more time is being created. Instead, it suggests that the passage of time is perceived differently by different observers depending on their relative motion or gravitational conditions.
For example, in the case of relative motion, an observer moving at high speeds relative to another observer will experience time passing more slowly compared to the stationary observer. This is not due to more time being created, but rather because the moving observer's entire experience of time—including processes like aging and physical changes—slows down relative to the stationary observer.
Similarly, in the presence of a strong gravitational field, such as near a black hole, time appears to pass more slowly compared to regions with weaker gravitational fields. Again, this is not because time itself is slowing down, but rather because the effects of gravity influence the passage of time for observers in different gravitational potentials.
While the concept of time dilation can be challenging to reconcile with our everyday experiences, it has been consistently supported by experimental evidence and is a crucial component of our current understanding of physics.