Reading, I remembered Pedro Fulleda Bandera:
Of musician, poet and madman, we all have a little!
No one always acts rationally, since the typically illogical forces of art (music), love (poetry) or madness sometimes burst uncontrollably into his or her behaviour. These are the facets we find in this immense sea of the Hive.
Rational is always personal - since no one ever has perfect information and decision making ability to make it truly rational by fact.