The tradition of all dead generations weighs like a nightmare on the brains of the living. An apt expression for the basic conundrum posed by all legacy IT systems. Why upgrade a system when it works? When does the risk of the new diminish to toll the death of the old? Computer systems that deal in pounds, shillings and pence are at the heart of the IT that runs some of the UK's biggest banks. They are inflexible and expensive to maintain, but they get the job done. They are hideously complex to replace, but ill-suited to gaining a single view of each customer.
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