Today's lesson: never trust MS Word's grammar checker. I'm writing my Watson/Fulbright personal statement, and I typed the (admittedly cheesy) line "I will have time enough to dig into Native American heritage and its meaning ..." "its" got the little green squiggle that indicates a grammar mistake. Word told me I should change it to "it's." So we would have an incorrect homonym, a nonsensical sentence ("... heritage and it is meaning ..."?), and a shift in tense ("will ... is"). Excellent.