Have you seen their Revised Whitepaper yet? Its new now. Come and take a look. You will surely be amazed by the changes they made as well as their official site. Refer to the links below.

Whitepaper: https://docs.wixstatic.com/ugd/b46aa3_6876d3662e7a4dc6b0732a2d190e0c38.pdf

I saw some changes not only in the way they presented the whole concept in the whitepaper but they omitted something too. Check it for yourself.