Given the Advancements in Quantum Computing why not just implement the code to protect the network from an attack now instead of later? “New phase of matter created in quantum computer exhibits two dimensions of time”

Because we're not there, yet. Just like we're not yet at self-conscious AIs despite wild claims of it, even in tests. Once tests passed, it would need months if not years for a very determined state to build it for production.

And because it's not hard to implement quantum-resistance once it's needed, given that some other crypto already have implemented it.

That said, if some rich user wants to fund such implementation through Gitcoin for personal peace of mind about their funds, I don't think anyone will mind. It's not as if decentralized implementation was needed to program in a single sequence where any current dev means delays for any other dev.

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