Cardano is considered the third generation blockchain. Bitcoin is the first generation blockchain, Ethereum is the second generation. Ethereum is the leading technology in the blockchain 2.0 generation, so it is very rudimentary. At present, Ethereum must rely on the management system to upgrade and expand. For blockchain 3.0 like Cardano, there is the advantage of self-awareness. Cardano ADA can detect the shortcomings and difficulties of previous projects in order to develop better.
let's talk about Blockchain 3.0 after they do something or at least improving their codebase,for now it's just another crap coin with a high level marketing from the team,unlike Ethereum.
also,if we are looking at our current system and environment.i think it's much more better calling NEO as the next generation of blockchain itself.
because many project was created based on NEO.