That's just a saying... in reality lightning takes the path of least resistance, so it would hit the highest thing and most conductive thing many more times than any thing else nearby.
Depends on your coordinate system. Since the Earth is orbiting the sun, and its orbit is not exactly the same every year, the Earth generally does not trace the precisely same trajectory through space. Additionally, the sun is orbiting some other star, which is orbiting some other star, etc. which orbits the black hole at the center of our galaxy. Also, our galaxy is moving through space, and space itself is expanding. So, accounting for all of that, and some other stuff I left out, lightning probably really doesn't ever strike in the same place twice.
No, often it strikes lightning rods of tall buildings. Which, with a very constrained coordinate system, is a spatial confinement that practically guarantees it strikes the same spot quite often. However, in the grander scheme of things, points in the universe are not so constant (particularly if you are talking in terms of loop quantum gravity).
Dang, toclafane beat me to it.
Anyway, if we are talking about location relative to Earth, and if we constrain the location of a strike to a single point, then I've just taken this outside of physics into metaphysics and I'm going to stop talking now...
I choose a random number, and continue to choose random numbers that are unlike any I chose before. Since there is an infinite amount of numbers to choose from, I will never have no numbers to choose from.
Or you could after infinite selections.
Tisk, tisk, tisk.
Anyway, if we are talking about location relative to Earth, and if we constrain the location of a strike to a single point, then I've just taken this outside of physics into metaphysics and I'm going to stop talking now...
Or you could after infinite selections.