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Trying to replace #toxic lead in perovskites ( perovskite structures have recently emerged as potential #solar cell materials due to their ease of processing)..
But never succeeding.. Makes me think that if we think from structural point of view of perovskite and then try to replace lead in it, we will end up concluding that only lead works..
Similar analogy can be applied to #capitalism. If we try to solve capitalism thinking within framework of capitalism..it is never gonna succeed.
