What drove David Sengeh to create a more comfortable prosthetic limb? He grew up in Sierra Leone, and too many of the people he loves are missing limbs after the brutal civil war there. When he noticed that people who had prosthetics weren’t actually wearing them, the TED Fellow set out to discover why — and to solve the problem with his team from the MIT Media Lab.
LinkIf you give the (rough) edge of your tongue, you scold someone severely or speak to them very aggressively or rudely. "My boss was so angry that I really got the rough edge of his tongue."