If you read the paper, you'll find there are many improbable occurrences, rather than just this one.

> > We show that 3I/ATLAS approaches surprisingly close to Venus, Mars and Jupiter, with a probability of ≲ 0.005% > > a) What does this even mean? If you throw a dart on a dartboard, anywhere it lands will have some probability. 1/200 doesn't seem that low.

Not 1 in 200 here. 1 in 20,000.