For example, idle time:
Virtual time is to study the failure of BIGBANG's initial time and construct a virtual time axis which is 90 degrees from the time axis.
Personally, I still don't quite understand what metaphor the North Pole is used for.
If you know something about relativity, quantum physics, M theory, etc. You can imagine (completely inaccurate, only easy to understand):
The existing space-time model is two-dimensional, and the following model can be made very easy to understand.
1. Simply understand the three-dimensional space as a straight line 10 cm, starting at a point in the positive direction of the coordinate axis Y and ending at 10 cm after that point.
2. Simply understand time as the length of 10 minute, starting at a point in the positive direction of the coordinate axis X and ending at 10 cm after that point.
In this way, a space-time model is obtained: the x axis is time, and one centimeter corresponds to one minute; The y axis is the distance, and 1 cm stands for 1 cm.
Now we introduce virtual time.