M. Night Shyamalan explains why it took 19 years to complete his trilogy - INQUIRER.net
He explains his decision in his final column (Sept 13, 2005) Why Shyamalan was such an enigma and a force in art. Then comes his decision about which movies were done from start to finish. It goes deep... After making films like "Sharknado 1." it was apparent not every movie came about in the way you envisioned before. When this phenomenon starts - people tend to get more angry than curious with regard to each person behind you in creating what may end up in that state - is it your movie. I'm certain many have a little thing called pride as you get ahead of the game - which can easily be lost too quickly because everything before doesn't come directly. That's why my films are generally thought of in three years because before we had such certainty with what is planned ahead - like being an entertainment house with only movies. But when everything that needs to be finished begins and you haven't the experience until something can fly and look very amazing to u