Tim Worstall declares William Easterly My Kind of Economist for making comments like this:
It doesn’t help the poverty trap story that 11 out of the 28 poorest countries in 1985 had NOT been in the poorest fifth back in 1950. They had gotten into poverty by declining from above, rather than being stuck in it from below, while others escaped. If the identity of who is in the poverty trap keeps changing, it must not be much of a trap.