Variable Fonts from a web design perspective (podcast)

I came across this great episode discussing the impact that variable font technology will have on web design in 2018 and beyond. Some very interesting perspectives are discussed: 

https://shoptalkshow.com/episodes/296-variable-fonts-jason-pamental/

Discussion starts around the 2 minute mark.

Link to the book featured, "Reponsive Typography: Using Type well on the Web", Jason Pamental (O'Reilly) 
http://rwt.io/resources/books/responsive-typography-using-type-well-web