I was so accustomed to the corporate ladder that I never knew anything else existed. It was always made known to me that we should all strive to climb it, and to retire at the top. Sounds nice and there is nothing wrong with that. You need to earn your place up at the ladder and I do respect the ladder, but I also like the notion of the jungle gym.
The jungle gym is a cool place for entrepreneurs, makers, experimentalist, digital nomads and risk takers to grow themselves in a more dynamic and fluid fashion. They embrace the flexibility of jumping between corporations and startups in order to grow themselves, often seeing the ladder as a horizontal bridge to take on different experiences and challenges through the work they choose.
Don't get me wrong about it being totally cool. The jungle gym is not for everyone or for the faint hearted, like me.