Logic cannot model causal systems, and paradox is generated when time is ignored [as in logic].
It takes two to know one.
Synaptic summation is the technical term used in neurophysiology for those instances in which some neuron C is fired only by a combination of neurons A and B.
All experience is subjective.
The meaning of your communication is the response you get.
Rather, for all objects and experiences, there is a quantity that has optimum value. Above that quantity, the variable becomes toxic. To fall below that value is to be deprived.