In the last Cotter’s Corner, we discussed the ascendancy of Justice Clarence Thomas as potential leader of the right bloc.Last week, in the case addressing Indiana’s abortion law, Box v. Planned Parenthood Of Indiana And Kentucky Inc., Thomas wrote a concurrence in which he mentioned the absence of anything in the Constitution about abortion.This column examines his reference to penumbras when it suits his needs, while on the topics of privacy and abortion, he creates a conundrum for those wishing to understand …