They created Pedal People as a way to create a useful service that helps the local economy and is environmentally friendly.

VOA: special.2009.12.04

It would be so easy if you built a cohesive system that carries the entire transaction to create a receipt that is useful.

如果你建立一个,能覆盖整个交易过程,能产生有效的收据的系统,一切都会变得更容易。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选