Forbes‘ sixth annual 30 Under 30 list calls itself “the most definitive gathering of today’s leading young change-makers and innovators” who are not yet 30 years old. As in past years, the MIT community is well-represented throughout. At least 30 MITers are spread among the 600 names and 20 diverse categories in this year’s list. (According to Forbes, the 600 honorees were narrowed from an applicant list of more than 15,000.)