"Human nature, generally, is greedy, lazy, self indulgent and destructive. We don't care about future generations or we wouldn't behave as we do."
A loaded supertanker would require about 5 to 8 kilometres and roughly 15 to 20 minutes to come to a complete halt. They have a turning diameter of nearly 2 kilometres. www.marineinsight.com
Supertankers are very hard to maneuver. For example, stopping a supertanker that is under way at its cruising speed can take about 10 miles in an emergency situation. thesouthern.com
A global population of billions of people in hundreds of different cultures, each with its own traditions and lifestyles and varying knowledge of other countries, moves forward under more inertia than the biggest supertanker. Added to that, new advances in materials and technology don't arrive in the world complete with warnings on each example - (on each plastic spoon, each nappy liner) - of all the side-effects that have not yet been discovered, to be read and understood by each user.
By the time it has been shown, for instance, that plastic breaks down into tiny fragments and is washed down drains and into the sea, most people have thrown away their enamel mugs and washing-up bowls and the layers of terry nappies and knitted soakers that their incontinent babies used to be wrapped in, manufacturers are packing their products in this wonderful light waterproof material, and the global economy has become dependent on using plastic. Replacing it is a slow and expensive business. It doesn't happen overnight.