The biggest concern of most blockchains to date is their ____________, as it has yet to achieve an exceptional level save for a few exceptions such as EOS & Ripple. (*) scalability (*) security (*) maintainability (*) interoperability
This is a companion discussion topic for the original entry at https://english.best/questions/22888,the-biggest-concern-of-most-blockchains-to-date-is-their-___-as-it-has-yet-to-achieve-an-exceptional-level-save-for-a-few-exceptions-such-as-eos-ripple/