Einstein's 1905 postulates entail the following:

(A) The moving clock runs FASTER than the stationary clock, as judged from the moving clock's system (SYMMETRIC time dilation).

According to high priests in the Einstein cult, the postulates entail the following:

(B) The moving clock runs SLOWER than the stationary clock (ASYMMETRIC time dilation) https://youtu.be/Q1y3YnPgaY4?t=1157.

Needless to say, since (A) is the valid deduction, (B) is non sequitur (does not follow from Einstein's 1905 postulates).

Why do high priests abuse logic and teach the non sequitur? Because symmetric time dilation (the valid deduction) doesn't, but asymmetric time dilation (the non sequitur) does imply TIME TRAVEL INTO THE FUTURE - the miracle (idiocy) that converted Einstein into a deity:

Thibault Damour: "The paradigm of the special relativistic upheaval of the usual concept of time is the twin paradox. Let us emphasize that this striking example of time dilation proves that time travel (towards the future) is possible. As a gedanken experiment (if we neglect practicalities such as the technology needed for reaching velocities comparable to the velocity of light, the cost of the fuel and the capacity of the traveller to sustain high accelerations), it shows that a sentient being can jump, "within a minute" (of his experienced time) arbitrarily far in the future, say sixty million years ahead, and see, and be part of, what (will) happen then on Earth. This is a clear way of realizing that the future "already exists" (as we can experience it "in a minute")." http://www.bourbaphy.fr/damourtemps.pdf

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