Consider the following outputs:

```
# Maple seq(nextprime(n), n=10..14);
# [11, 13, 13, 17, 17]
# Mathematica Table[NextPrime[n, 1], {n, 10, 14}]
# [11, 13, 13, 17, 17]
# Julia println([nextprime(n) for n in 10:14])
# [11, 11, 13, 13, 17]
# Maple seq(prevprime(n), n=10..14);
# [7, 7, 11, 11, 13]
# Mathematica Table[NextPrime[n, -1], {n, 10, 14}]
# [7, 7, 11, 11, 13]
# Julia println([prevprime(n) for n in 10:14])
# [7, 11, 11, 13, 13]
```

Question:

Were the Julia functions so designed only to confuse the Russians

or are there less profane reasons for doing so?