3 points...?

"Robert H. Jackson wrote that, as Solicitor-General of the United States in the 1930s, he made three sets of submissions in every case: first, the one he planned (“logical, coherent, complete”), secondly, the one he actually presented (“incoherent, disjointed, disappointing”), and thirdly, “the utterly devastating argument that I thought of after going to bed that night”." (here)

So true in debates as well!