Comment by holoduke

Because a rule of thumb is to not focus too much on performance in the beginning of a project. Better a completed project with some performance issues, than a half product with hyper speed. The key thing with development is to find somekind of balance within all these attributes (stability, performance, loo, reusability etc) In case of FS simulator. Not sure what the motives were. Sure that they had some serious time constraints. I think they did an acceptable job there.