Confusion from popular culture

[mtbc]

In Babylon 5 (1994) telepaths' power was rated numerically on the psi scale: for example, when we met them we soon learned that both Lyta and Talia were rated P5, useful but not noteworthy. With modern British primary schools tending to organize year groups from P1, the youngest, up through P7, Miranda thus has occasion to tell me things that sound strange, such as asserting that some child we see outside is a P5.