No free lunch

Interesting to be conscious reading that article about the great amount of trade-off related to any engineering master craft....

Did we all watch the same video? Because the one I saw there was nothing about any free lunch, nothing about impedance, and zippo about tradeoffs.

So either we all watched different videos, or people "get" stuff that never was there. I know which one my money's on. But hey, feel free to prove me wrong. It's a video. Simply point out the time stamps where they talk about 
1. free lunch
2. impedance
3. tradeoffs

Thanks!

Miller: the "no free lunch" side of things is introduced in the comments section by Mr. Chris Brunhaver of PS Audio, to counter the views of Sean Casey of Zu on his take on (the advantage of) higher sensitivity speakers. Not meant as a comment on high vs. low sensitivity from my side here, but just to point out the "missing link"..

Did we all watch the same video?

The video is 2 minute long....

The engineering deep problems related to these trade-off are over my head anyway...

My post was clearly refering to the article under the video...

The only thing that i know is engineering by definition is an art of trade-off between different aspects of physical laws....

No free lunch means that NO DESIGN could be without his own perspective and design costs... Which is an evidence....

I was refering to the article under it.... 😊

It’s not the video MC.
It’s the comment calling it out.
Try reading.
Like mahgister or phusis. 
Or remain irrelevant.