According to our current understanding of physics, humans or any objects with mass cannot travel faster than the speed of light in a vacuum. The theory of relativity, proposed by Albert Einstein, establishes the speed of light (denoted as "c") as an absolute speed limit in the universe.
As an object with mass approaches the speed of light, its relativistic mass increases, requiring an infinite amount of energy to accelerate it further. Additionally, time dilation occurs, meaning that time appears to slow down for the moving object relative to an observer at rest. This effect becomes more pronounced as the object approaches the speed of light, and at the speed of light itself, time dilation would be infinite.
If, hypothetically, an object with mass could surpass the speed of light, it would lead to several consequences that violate the principles of causality and the fundamental laws of physics. For instance, events could be observed to occur before their causes, leading to paradoxes and inconsistencies.
It's important to note that the theory of relativity has been extensively tested and verified by numerous experiments and observations. Thus, based on our current scientific understanding, it is not possible for humans or any material object with mass to exceed the speed of light without fundamentally altering our understanding of physics.