My understanding of how EOS achieves massive transaction speed / scalability is that it delegates block production to a single actor for each block. How is block forgery NOT possibly a problem? I've read the explanations and it's somehow 'the longest chain wins' like Bitcoin ... but I don't see how that actually applies in a 'one actor per block' scheme? One actor just forges, block is hashed, boom, done: nobody the wiser. Hope my question makes sense :) and I'd love to know the answer! Big fan of EOS in all other ways than this lingering doubt.