Everyone thought Ratan Tata was crazy when he set out to build a car for the price of a scooter. Same with Richard Branson or Jeff Bezos spending money on space travel. But, to paraphrase Einstein, if your idea doesn’t sound ridiculous at first, it doesn’t stand a chance.

Hal Gregersen on Bloomberg Businessweek writes about why we might want to rethink our attitudes about the investments these nuts are making.

“With vexing challenges around the world, it’s time for each of us to step back, look up, and pull a bit of that nighttime galaxy wonder back into our hearts. Whatever our vocation or avocation, the colony of space startups reminds me that it’s time to dream a little bigger. Better yet, time to help someone else dream big as well. It’s not a bad launching point for building the next generation of idea makers and impact creators.”