The Distinction Between Theory and Practice Writ Large

CDR Salamander pointed this video out, so full credit to him, but it's too important not to put up here, too:

LTG McMasters expresses a large amount of hard-won knowledge. Falling in love with theory instead of dealing with reality is a path to ruination.

For a further look at this, you might want to listen to our Midrats show about the NATO Training Mission in Afghanistan: Listen to "Episode 607: The NATO Training Mission in Afghanistan - Hopes & Lessons" on Spreaker.