Heathrow's difficulties start with the fact that, having been built to cope with 45m passengers a year, it actually handles about 70m.
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For a start, the technical difficulties of reintroducing a national currency, reprogramming computers and vending machines, minting coins and printing notes are huge (three years' preparation was needed for the euro).
One of the greatest difficulties faced by a start-up is that financing is often done in stages, subject to meeting benchmarks.
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Faced with the first difficulties of a magical start to his reign at 66-0, Pietersen was happy to be able to turn to Flintoff, and his all-rounder duly made the breakthrough, albeit not in the customary manner.
Skilled immigrants of all nationalities are experiencing visa difficulties and hardships that hamper their efforts to start new businesses.
It may equally have to subject its armed militias to the PA's collective decisions and may start to lose popularity as it grapples with the mundane difficulties of government.
Ironically, given Mr Obama's difficulties in the Urals, the easiest place to start may be arms control.
With only minor support of a few Representatives from other political parties, his administration had difficulties in trying to create a Constituent Assembly from the start.
Since the start of the by-election campaign, the party has faced further difficulties with former Liberal Democrat chief executive Lord Rennard facing allegations of sexually inappropriate behaviour by female Lib Dem activists.
The difficulties with the question are not just the fault of The Economist trying to start a fiery debate.
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