"Business secretary Peter Mandelson is slimed by an environmental protestor outside the Royal Society on Carlton House Terrace, Pall Mall after allegations of 'favours for friends' over the Heathrow third runway decision" [Courtesy of "Plane Stupid", via Wikimedia]
Backups are imperative, more so in an age of uncertainty, unpredictable weather, and worsening standards (quality of products going down while prices go up)