There is one verb tense error in this paragraph. correct it:

that said, the first truly accepted take-off and flight powered by nothing other than the pilot himself, occurred almost fifty years later in november 1961, when derek piggott flies the sumpac ( southampton university’s man powered aircraft)a then world-record distance of 650-yards (594m).

The verb tense error in the paragraph is: flies

That said, the first truly accepted take-off and flight powered by nothing other than the pilot himself, occurred almost fifty years later in November 1961, when Derek Piggott flew the SUMPAC (Southampton University’s Man Powered AirCraft) a then world-record distance of 650-yards (594m).

The verb "flies" should be in past-tense because throughout the paragraph all the verbs are in past tense, indicating that an event has already occurred. Therefore, it should be replaced with the word "flew."

being buried alive

explanation:

- "the die is cast; i have consented to return if we are not destroyed. thus are my hopes blasted by cowardice and indecision; i come back ignorant and disappointed. it requires more philosophy than i possess to bear this injustice with patience. i have lost my hopes of utility and glory; i have lost my friend."