Confusion regarding acceleration in SR

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sophiecentaur said:
Perhaps you could translate those links instead and help with identifying and explaining the 'preferred frame'. Those links introduce so much other stuff that my paths is getting more divergent than the convergent I was hoping for.
The links are specifically about it, as are many threads here already. Here the PDF of the Weeks article:
https://www.math.uic.edu/undergraduate/mathclub/talks/Weeks_AMM2001.pdf
 
on Phys.org
anorlunda said:
It is really hard to textile questions like this with words. Draw diagrams.
Yes, Minkowsky diagrams with light cones. Since the light paths are invariant pick any two coordinate systems "moving" and "stationary" and compare "events"; where the cones intercept world lines. You get wave crests (that start at different times) or clock ticks or whatever (birthdays..).