According to Cointelegraph, Ethereum developers have proposed a hard fork called Muir Glacier in response to the upcoming "Ice Age", which may cause the Ethereum mainnet to run significantly slower. The Ice Age is also known as the difficulty bomb. This code artificially reduces the production speed of the blocks on the Ethereum blockchain, thus deterring miners who may choose to continue using PoW after Ethereum transitions to PoS. However, according to developer James Hancock, the existing Ice Age implementation has some unnecessary complexity and is confusing in community communication. He added that any update to the design should be able to model the impact of the network in a simple and clear way that is easy to predict when a hard fork will occur. But at present he thinks this is not the case. Hancock further states that the upcoming hard fork of Ethereum will postpone the mechanism "to a reasonable extent" in order to give developers time to decide whether to update the Ice Age to make its performance predictable or delete it entirely.