How exactly does one earn Canadian citizenship?

[ZingyDNA]

Law says you can qualify to apply for citizenship after; you legally entered the country, became PR, lived 4(in 6) years in Canada after receiving PR. Tell me I'm wrong on this one.
With my passport example I tried to underline the absurdity to differentiate all the steps and ask the question how one earns just the citizenship.

Too add to what Screech said, per current immigrations laws PR's can qualify for citizenship after physically present in Canada for certain number of years, but that does NOT mean PR's have a right to citizenship. No Canadian laws have said such a thing.

If tomorrow they changed the rules to abolish PR to citizenship, no fundamental laws would be broken. Some lawyers may argue some procedure unfairness, but that's about it.

This is why you have to look at PR and citizenship separately. Some countries with a PR system may not have a direct route from PR to citizenship...