analyze
apply reason
deduce
entertain a theory
espouse a theory
generalize
guess
have a theory
infer
intellectualize
logicalize
logicize
philosophize
provide a rationale
rationalize
reason
speculate
syllogize
synthesize
theorize
use reason
anticipate
expect
construct
develop
explicate
formulate
reconstruct
retrace
hypothesized
hypothesizes
hypothesizing
hypothetical