The programmer using the systematic strategy [of program modification] wants to understand how the program behaves before attempting to … execution of the data flow paths between subroutines. … In contrast to the programmer using the systematic … The programmer attempts, as soon as possible, to … … [p. 342] Our empirical data show that there is … the program successfully. … [p. 353] Subjects in our study were not allowed … Programmers using the as-needed strategy may depend more … strategy.
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