It has become unanimously accepted that both the mathematicians independently developed calculus. Since then priority has caused a number of historical maladies in the history of science.[1][5] In the cases of scientists who have since achieved incredible levels of popularity, such as Charles Darwin and Albert Einstein, priority questions are often rooted in taking too seriously the myth of the "lone genius" which is often cultivated around such quasi-mythic figures (see Great Man theory and Whig history). In an attempt to laud such scientists as visionaries, the context in which they worked is often neglected by popularizers, making it appear as if they worked without assistance or without reference to other work, something which is rarely the case.