EN
The paper discusses some problems concerning transcendental arguments. The author reconstructs the main aspects of transcendental arguments, their functions (as anti-skeptical strategies) and their structure. What is crucial in this respect is that transcendental arguments are not modus ponens reasoning but synthetic a priori statements and forms of 'situated thought'. In this sense there is a connection between the idea of 'situated thought' and some of Husserl's conceptions from the 'Logical Investigations'. The author discusses also this problem in reference to Searle's transcendental defense of external realism.