> Programs often reserve a lot more memory than they actually use (zero hit in performance) so memory stats are misleading, and the OS is really good at swappin

> Programs often reserve a lot more memory than they actually use (zero hit in performance) so memory stats are misleading, and the OS is really good at swapping memory not touched in a while to the SSD without you noticing. The stats are absolutely reliable because no physical memory page is allocated until it is actually used to store something. So allocating a large chunk of unused memory wouldn't show in the (physical) memory usage stat.