Only 15 months, as you can do something that valuable in 15 months. Maybe this guy is a genius with a deep expertise in something precious or maybe he doesn't r

Only 15 months, as you can do something that valuable in 15 months. Maybe this guy is a genius with a deep expertise in something precious or maybe he doesn't really have taken any risks by himself since the beginning (cf: http://www.crunchbase.com/person/henrique-de-castro http://www.crunchbase.com/person/henrique-de-castro). Impressive CV though.