Basically we don't reinvent the wheel, we follow certain 'film making' procedures and formulas which work and work well - and by virtue of successful films the world over, are proved to work time and time again. We have to remember, that while different film genres exist, the central approach to making a film is fundamentally the same. There are certain universal principles that have to be followed if you're to make a successful film on time and on budget and if these brass tacks are integrated into your approach, then you minimized potential obstacles.