I seem to remember reading somewhere that Marilyn vos Savant had said that it is acceptable to use a calculator when learing arithmetic (I do not remember the reason given) but that clocks should not be used to learn time. (I might be mistaken, since I do not remember for sure.)

I wasn't able to find anything about (analog I presume) clocks for education, but it sounds like she is against calculators for elementary arithmetic education: https://parade.com/345575/marilynvossavant/why-math-students...