What are some possible solutions to deal with the increased orphan rate when Ethereum shifts to its Proof-of-Stake system, Casper?

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    Why would ophan rate inscrease with PoS ? In PoS the validator of a block is picked at random – jerome de tychey Jan 6 '17 at 16:44

I'm not sure that Casper will cause an increase in the number of blocks that are orphaned - and on top of that, I don't think Ethereum even really has a concept of orphaned blocks.

Because the Ethereum consensus algorithm uses a modified version of the GHOST protocol and, as a result, valid blocks are included in the chain (albeit indirectly) even if they aren't in line with of the main chain.

In PoS, I have a feeling this uncle rate would actually fall, because instead of all miners working on a block at once (and therefore possibly coming to different finalized blocks at the same time - causing uncles), validators will be stochastically chosen to create blocks during specific time intervals (leading to much less overlap).

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