Dalam hal ini, mendiang filsuf eksistensialis Sartre akan mengamati  segala sesuatu tidak dapat dilarutkan dalam kesadaran (Sartre, 1939) dan  manusia serta logikanya hanya dapat dipahami dalam konteks relatif dunia. Sobat, kata Sartre, Anda tidak akan menemukannya terputus dan hilang dalam beberapa titik keberadaannya, tetapi hanya sebagai manusia di dunia dan hal-hal yang mengelilinginya. Karenanya kini diktum Descartes diubah: Saya tidak boleh hanya menerima apa yang disajikan secara meyakinkan dalam pemikiran saya. Logika tidak lagi menjadi panduan utama dalam penaklukan kebenaran. Terlebih lagi ketika kausalitas itu sendiri terguncang oleh ketidakpastian akan ketidakpastian.
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