Its when they solve a block almost immediately after the last block, like seconds. I belive the template isn't filled out with transactions yet or something like that
Discussion
Ohhh that makes sense. It wasn't clicking for me.
Correct because miners don't communicate instantaneously. They batch their work. And pool mining has a few more hops between nodes and miners which ultimately make pool mining more efficient for finding blocks.
I wonder... If there's enough latency to cause empty blocks, will that alone force pools to be smaller when the coinbase is gone? Or low enough that fees are most of the revenue