ðɪ ˈæbsəns ʌv mˈuːvɪŋ pˈɑːɹts ɪn jˌuːˌɛsbˈiː flˈæʃ dɪvˈaɪsᵻz ɐlˈaʊz tɹˈuː ɹˈændəm ˈæksɛs, ðɛɹbˈaɪ ɐvˈɔɪdɪŋ ðə ɹoʊtˈeɪʃənəl lˈeɪtənsi ænd sˈiːk tˈaɪm ʌv hˈɑːɹd dɹˈaɪvz ɔːɹ ˈɑːptɪkəl mˈiːdiːə, mˈiːnɪŋ smˈɔːl pɹˈoʊɡɹæmz wɪl stˈɑːɹt fˈæstɚ fɹʌm ɐ jˌuːˌɛsbˈiː flˈæʃ dɹˈaɪv ðɐn fɹʌm ɐ lˈoʊkəl hˈɑːɹd dˈɪsk ɔːɹ lˈaɪv sˌiːdˈiː.
The absence of moving parts in USB flash devices allows true random access, thereby avoiding the rotational latency and seek time  of hard drives or optical media, meaning small programs will start faster from a USB flash drive than from a local hard disk or live CD.