Estimations are but mere guesses, albeit more predictable in projects like building bridges which have been done over and over with clearly defined and repeatable tasks.

It might come to a surprise for some, but the reason why estimations are off is due to human factors; our inability to communicate effectively, to share the same vision and to have a good big-picture view while at the same time minding the minute details.

The more people involved in a project, the slower it gets and the harder it is to maintain consistency in design.

It’s another way of showing a ‘battle’ between the U.S and Europe actually, just as U.S v/s Europe v/s Russia in space exploration.

It’s just sad that Airbus’s A380 took more than one year of delay over it’s supposed initial deliveries.

However, even if they it will use 20% less fuel and bla bla. I never really trust those figures, it’s like a car manufacturer saying a car will do 100km on 6L of petrol… when it fact it uses almost twice the amount.. anyway back to the topic!

Between Airbus and Boeing, I’d go for Airbus – with its new monster A380, being able to carry almost twice the number of passengers than the B787, it THINK over one same trip – the Airbus might turn out to be less pollutant PER passenger.. well I may be wrong also.. just a piece of my thought .