I agree that it's superstition too. If the person is very clever/ inspired they can make any prediction open enough to always be correct. Those things have to be taken with a certain assumption, and of course if you change your perspective (disbelieve rather than believe) then your understanding of them has to change too.
It's insensitive/ neive of your friend to relate that to you as a unbeliever, as it can only come across as superstition.
It's insensitive/ neive of your friend to relate that to you as a unbeliever, as it can only come across as superstition.

