# Back pocket questions 1. what chains I've heard of were built with Cosmos SDK? 2. what is a smart contract? Why are they called that? 3. what opportunities are there in Juno? 4. somebody told me that Terra had something to do with Cosmos 5. what is a protocol? 6. what opportunities are there in the Cosmos ecosystem? 7. is Juno hiring? 8. what is the environmental impact of Juno? 9. what can you do with smart contracts anyway? 10. what's the best way to get started as a dev? 11. has the market crashing affected opportunities in the space? 12. isn't crypto full of scams?