Andy Ihnatko on Snow Leopard’s speed increase:
Time after time, Snow Leopard “caught me reaching.” That is, I’d launch a complicated app and my Mac would complete the task while I was reaching for my deskside beverage. Going for a sip of Dr. Pepper is a reflex action; under 10.5, I know I have time to get a drink and put the glass back on its coaster before my Mac is ready to receive visitors once again.
Exactly.