[alexpetralia]

I find this nicely captures the difference between "rationality" and "reasonableness". A system can be rational but rest on unreasonable assumptions; a system may not be entirely rational but at least can have reasonable assumptions.

[bookaway]

(can't edit the downvoted comment)

for the curious, from Merriam Webster dictionary:

rational 1 a - having reason or understanding

b: relating to, based on, or agreeable to reason : reasonable

From American Heritage dictionary:

rational

1. Having or exercising the ability to reason

2. Consistent with or based on reason or good judgment; logical or sensible.

It creates misunderstanding to choose to create a differentiation between two words that most people view as synonymous.

[bookaway]

Let's not change the meaning of existing words needlessly please. It is not rational nor reasonable to insist on ignoring reality.