I just completed a backup to my external drive using Time Machine.
Just to experiment, a minute after it finished, I created a 20 KB Word document containing exactly one letter (a lower case "j" to be exact).
I told Time Machine to do its thing again and (not to my surprise) it told me it was backing up 13.3MB. By my math, that's about 665x the size of the minor change that actually took place on my machine.
As I've found some somewhat technical explanations that I can't quite grasp, can someone here explain in simple terms why this happens? Because it seems to me Time Machine is just sucking up space on my external drive.
Just to experiment, a minute after it finished, I created a 20 KB Word document containing exactly one letter (a lower case "j" to be exact).
I told Time Machine to do its thing again and (not to my surprise) it told me it was backing up 13.3MB. By my math, that's about 665x the size of the minor change that actually took place on my machine.
As I've found some somewhat technical explanations that I can't quite grasp, can someone here explain in simple terms why this happens? Because it seems to me Time Machine is just sucking up space on my external drive.