The Nature of Time

Time is described as having a beginning with the Big Bang, leading to the understanding that it is not infinite in both directions. The concept of 'semi-infinite' time is introduced, indicating that time extends infinitely into the future but has a definitive starting point. This suggests that although we may think of time as constant, its existence is intricately linked to the universe's expansion and our perception of motion. Therefore, time can be seen as a construct that helps us navigate and understand changes within the universe.