"Banning books seems to be the new battle ground for politicians, sigh." Writing textbooks for core subject areas, with material stirring controversy seems to

"Banning books seems to be the new battle ground for politicians, sigh." Writing textbooks for core subject areas, with material stirring controversy seems to be the new battleground for educators. Ever notice how someone can create a hostile environment without doing anything hostile? Or someone can push right to edge, then back off, claiming "not my intent". There is an analogous concept in physical therapy. You move a body part as far as you can, to test range of motion and limits. Then try it again, except the therapist assists you to move it farther, even supporting it while you rest a moment. Then you repeat the test, almost always going significantly farther. You move the bar, the limit, the acceptable range of motion, or speech, or teaching social justice under the guise of core math.