> he presents the timings as 50 minutes as against 10 Yes, but again this is his rhetorical strategy. You absolutely can skim an hour's material in 10 minutes.

> he presents the timings as 50 minutes as against 10 Yes, but again this is his rhetorical strategy. You absolutely can skim an hour's material in 10 minutes. Many are tempted to try. But if it's new to you, you won't learn it. Not a very 2020s style of writing, I have to say. Would not work as a tweet storm.