in the beginning when Steve Jobs created the Macbook
he said let there be a 2.0Ghz Core2Duo, and there was a 2.0Ghz Core2Duo, on day 2 he said let there be 2GB of RAM, and there was 2GB of RAM,
...
[days later]
...
on day 6 Steve Jobs said let there be Leopard, and there was leopard, but he found that leopard was initially kind of slow, After leopard indexed everything and ran through a few minor setups ect. Steve Jobs said "REBOOT" (in a God-ly tone) and Macbook rebooted.
On Day 7 Steve Jobs Saw that everything he had created was good, but instead of resting, he ordered his minions to begin work on cougar!
(in reality leopard only took a few hours to index and setup everything, and leopard is much faster than tiger in just about everything!

)