In this paper, I undertake to present clearly just what informal logic ('logika nieformalna') is and how it relates to formal logic, and to logic as such. To do that, I start by explaining how the Informal Logic Initiative (ILI) began in North America in the 70s. That will lead to a discussion of what is meant by 'informal logic' and how it stands related to cognates such as formal logic, critical thinking, and argumentation. In Section 3, I discuss what I take to be basic theses about argumentation that have emerged from the informal logic perspective. In Section 4, I discuss some achievements of informal logic, and in Section 5, I discuss several interesting recent developments and in Section 6, I discuss the possible future developments. I conclude with some remarks on the importance of the Informal Logic Initiative in Section 7.
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SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.