 It is now time to present in some detail Porchat’s neo-Pyrrhonism, for it is arguably the most important contribution to Latin American skepticism. His seminal paper, “On What Appears”, was published in 1991, laying the foundations and the outline of his skeptical stance. Later, in a number of papers, he explored the main ideas further, corrected minor points, developed new aspects, and wrote some introductory and accessible texts.