ɪn hɪz ˈɑːɹɾɪkəl, ðə nˈoʊʃən ʌv ɛɡzˈɪstəns, ˈɑːmæd ˈɑːɹɡjuːd ðætðɪ ˈɪmpækt ʌv saɪəntˈɪfɪk dɪvˈɛləpmənt hɐz kɹiːˈeɪɾᵻd ðə pɹˈɑːbləm ʌvðə sˌʌbdʒɪktˈɪvᵻɾi ʌv sˈɛns kwˈɔlᵻɾiz ænd ɐ sˌɛpɚɹˈeɪʃən bᵻtwˌiːn nˈɑːlɪdʒ ænd ɛɡzˈɪstəns.
In his article, The Notion of Existence, Ahmad argued that the impact of scientific development has created the problem of the subjectivity of sense qualities and a separation between knowledge and existence.