Comment: But it's not ENTIRELY subjective.

(See in situ)

In reply to comment: exactly. This is why Ayn (see in situ)

But it's not ENTIRELY subjective.

Note the example about smoking joints in my reply above.

While the decision to smoke the first joint of the day may have been rational, the decision to smoke the last one in the example was demonstrably NOT rational.

The preference did not change in the example. The desire did not change in the example. The MARGINAL utility did, hence the RATION of each independent decision in the series DID change.