I wanted to share my favourite part, when the author was talking about custom UI elements, so I copied the text to share it with you:
> Customishard,andtomecustomisreallysayingthatyouhavemoretimetothinkaboutthebehaviorofaselectboxthanApple’sinteractiondesignteam.Andthatyouhavethedevpowertofixit. Oneveryplatformoutthere.Sosometimesyoujusthavetobepragmaticifyou’rebuildingaproduct
PS: slideshare sucks at exactly this kind of UI.