'rationally-focused' originates from the combination of 'rationally' and 'focused', where 'rationally' is derived from 'rational', meaning 'based on reason or logic', and 'focused' from 'focus', meaning 'to concentrate attention or effort'.

'Rationally' evolved from the Latin word 'rationalis', and 'focused' from the Latin word 'focus', meaning 'hearth' or 'fireplace', which later came to mean 'center of activity or interest'.

Initially, 'rationally' meant 'in a manner based on reason', and 'focused' meant 'concentrated on a central point'. Together, they evolved to mean 'concentrated on logical reasoning'.