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Isaac Rodgin is the head of BD at Fuseio, a blockchain specializing in plug-and-play mobile payment infrastructure. He explains the ‘Scalability Trilemma’ is hard (although not necessarily impossible) for a blockchain platform to be secure, fast and decentralized at the same time. The solution to the scalability conundrum may not come from any single blockchain project but it may lie in interoperability. Public blockchains can benefit from connecting to private ones in order to give some of their users the advantages provided by more centralized solutions.