In the Section "Index as ordered Set", Bitwise operators are mistakenly equated with Set Operators: intersection, union, symmetric difference. ``` indA = pd.Index([1, 3, 5, 7, 9]) indB = pd.Index([2, 3, 5, 7, 11]) indA.intersection(indB) Index([3, 5, 7], dtype='int64') indA & indB # intersection (actually binary AND) Index([0, 3, 5, 7, 9], dtype='int64') ``` Not a big deal, but confusing. Thank you for your book.