Why are Apple applications are so much larger than similar Microsoft applications. Some examples: Word -12.7 MB and Pages - 273.4 MB: Excel - 11.7 MB and Numbers - 138.6 MB. Both Word and Excel are sophisticated programs and I would have assumed they would be large, and that since Pages and Numbers are relatively new so they would be lean, but the opposite seems to be the case. They all work well except Numbers is slow. Is that a function of size? Is obesity epidemic in programming as well as programmers?