Margulis was now denouncing the modern framework of the century-old theory of Darwinism, which holds that new species build up from an unbroken line of gradual, independent, random variations.

• 如今，玛格丽丝又公开对历经百年的达尔文学说的现代框架发起抨击。达尔文进化论认为，新的物种是通过线性不间断的、渐进的、独立的和随机变异的过程而形成的。