  In 1959, Pelczynski and Semadeni proved a theorem in which they gave some
equivalent conditions for a compact Hausdorff space to be scattered. The
purpose of the current note is that to clarify the meaning of the subtle term
"conditionally weakly sequentially compact" they used as the basis for the
proof of their theorem. Unfortunately, the term now is taken over by a similar
but subtle concept that may cause a serious problem.
