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Finally, in order to make the determination of logical entailment, we compare the two rightmost tables and notice that every row remaining in the premise table also remains in the conclusion table.
In other words, the premises logically entail the conclusion.
The truth table method has the merit that it is easy to understand
It is a direct implementation of the definition of logical entailment.
In practice, it is awkward to manage two tables, especially since there are simpler approaches in which
only one table
needs to be manipulated
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