So, I took 15 different lists from key thinkers, like the Encyclopedia Britannica, the Museum of Natural History, Carl Sagan's Cosmic Calendar on the same -- and these people were not trying to make my point; these were just lists in reference works, and I think that's what they thought the key events were in biological evolution and technological evolution.
所以，一共用了15个不同重要思想家的列表， 像大英百科全书，自然历史博物馆，卡尔萨根的宇宙日历 而这些人并没有试着证明我的观点， 他们只是列举参考文献。 我想这就是他们所认为的在生物进化和科技进化中 的关键事件。