Hillary Clinton is ducking her final debate with Senator Bernard Sanders, brushing off a commitment she made earlier this year to participate in a forum in California ahead of the state’s June 7 primary….

This raises two questions in my pea brain.  One is, of what is she so afraid?  She’s shown herself an effective debater, and this would have been a golden opportunity to put her opponent away and enhance the strength of her supporters at the Democratic Convention regarding such things as the Party Platform, which Sanders wants to drag even farther to the left.

The other question is a larger one: if Clinton won’t keep this commitment, how can we trust her to keep any commitment were she to be elected?  What is the value of her word, exactly?