Washington (CNN) Consider how you might try to explain the personality and presidency of Donald Trump to someone who knows nothing about him or how he has governed.

It's not as easy as you might think. He's hugely abnormal in his approach. He has smashed conventional wisdom over and over again. He has undermined the idea of objective facts. He has transformed how social media is used in politics.

Showing, my English teachers always told me, is better than telling. So, rather than try to explain Trump in words, I would suggest you could simply show this unknowing person trying to understand the President the events of the past week.

Consider:

* Trump backs off his threat, made via Twitter , that he would close the border with Mexico unless the country works more aggressively to stop caravans of immigrants moving toward the United States. Trump gives Mexico a one-year reprieve after Republican elected officials panic at the economic impact of such a move. Trump insists his position never changed