It's a technical thing. Even though difficulty has a statistical distribution, the actual brute-forcing of hashes has a luck factor. This is what causes variation in block time

> luck streak

is this a technical thing or just a figure of speech? 

I know I can just ask AI, but I prefer to zap Opti for an answer :-)

billytheked

I was for a moment worried that there would be stales, but no. The good news is that at 10EH, the "TIDES" window in which your shares count is like 4 days or so, so at least you've not lost work, yet. You need a block within a day or so though or some shares may go unpaid (which is shitty if you had a luck streak with those shares)