Common_Sense_Matters wrote:
Simple answer, SOTU was a fully scripted speech and probably wasn't written by him, it was likely written by his whitehouse staff. Many presidents don't write all and sometimes any of their speeches. Today's speech was most likely his own words, unscripted or minimally scripted. He typically comes off incoherent when he doesn't follow a strictly scripted speech.
You comment made me giggle. Trump can barely strong two words together in a coherent way. Of course he didn't write it!