And perhaps we could just stop building on floodplains. But how long will those flood defences remain effective? They might work against the 1 in 100 year floods that are now coming every ten years, but what about the 1 in 1,000 year floods that are coming every 50 years? And how exactly do you mitigate against temperatures that make it impossible to grow crops? Don't most of the economic analyses that compare the cost of doing nothing to stop warming with the costs associated with the consequences warming always show that the latter is considerably more expensive?For a start why not forgo the investment in expensive heat-source pumps and instead put all that money into flood defences.