structural:summarization, quality:corruption
Wittgenstein table

In proposition 5.101 of the Tractatus Logico-Philosophicus, Wittgenstein listed the table above as follows:

The truth table represented by each row is obtained by appending the sequence given in Truthvalues to the table

For example, the table

represents the truth table for Material implication. Logical operators can also be visualized using Venn diagrams.