I was confused too. Perhaps some of us are easily confused. At work there is a form for writing progress reports, and one blank says "SI." I was puzzled about that for a while before I realized that it must be for "staff initials," not "self injury."

I want one of those shirts too.
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“We should always pray for help, but we should always listen for inspiration and impression to proceed in ways different from those we may have thought of.”
– John H. Groberg