Theoretical objections aside, I have seen preview demos of Velocity on mobile devices, and it is surprisingly quick compared to its competitors. Even with demos

Theoretical objections aside, I have seen preview demos of Velocity on mobile devices, and it is surprisingly quick compared to its competitors. Even with demos involving many, many, particles. I haven't delved deeply into all the tradeoffs - maybe it will overuse the CPU - but there's definitely something going on here. There's a similar library called GSAP (http://www.greensock.com/gsap-js/ http://www.greensock.com/gsap-js/) and they've made similar points (http://css-tricks.com/myth-busting-css-animations-vs-javascript/ http://css-tricks.com/myth-busting-css-animations-vs-javascr...).