ðə tɹˈuːθ vˈæljuː ʌv ðɪs ɐsˈʌmpʃən—wˌɪtʃ ˌʌndɚlˈaɪz juːklˈɪdiːən dʒiˈɑːmətɹi ænd sˈɜːvz æz ɐ jˈuːsfəl mˈɑːdəl ɪn ˈɛvɹɪdˌeɪ mˈɛʒɚmənt—ɪz ɐ mˈæɾɚɹ ʌv fˌɪləsˈɑːfɪkəl spˌɛkjʊlˈeɪʃən, ænd mˈeɪ ɔːɹ mˈeɪ nˌɑːt ɹᵻflˈɛkt ðə tʃˈeɪndʒɪŋ ɹɪˈælᵻɾiz ʌv "spˈeɪs" ænd "dˈɪstəns" ɔnðɪ ɐtˈɑːmɪk lˈɛvəl ɐpɹˈɑːksɪmətli ðə skˈeɪl əvə nˌænoʊmˈiːɾɚ.
The truth value of this assumption—which underlies Euclidean geometry and serves as a useful model in everyday measurement—is a matter of philosophical speculation, and may or may not reflect the changing realities of "space" and "distance" on the atomic level (approximately the scale of a nanometer).