From: Quora Digest <[email protected]> To: [email protected] Subject: Why are there crushed stones alongside rail tracks? - Quora Date: Sun, 06 Dec 2015 04:52:12 +0000 giQuora Top Stories from Your Feed Your Quora Digest Why are there crushed stones alongside rail tracks? David S. Rose, Serial entrepreneur and active angel investor, based in New York av-id 10.7k votes 2 This is a good question with an interesting answer. The crushed stones are what is known as ballast. Their purpose is to hold the wooden cross ties in place, which in turn ... Read More >7, What are the 5 tips of a productive developer? _,_GI Glyn Williams, Grizzled game industry veteran. vn 2.6k votes 2 Jonathan Blow is an impressive developer. It's hard to imagine just how productive he is. He is an independent game developer. To make this sort of project you have to ... Read More » What do taxi drivers know that most people don't? Aaron Alexander, Marketing, copywriting, ex-actor, New s Aa Zealander ro—n 6.6k votes I've never forgotten the advice I got from the taxi driver who took me home from the hospital after my eldest was born: "It's not what you say or do - it's what you are.... Read More » What is the most depressing one liner? Dushka Zapata, Reader. Writer. Introvert. ushk I 2.9k votes We have a saying in Mexico that breaks my heart every time I hear it. It refers to the times when you make yourself vulnerable to getting hurt. EFTA01139528