<prompt> Translate the following text to EnglishWasimamizi wa programu wana sababu nzuri za kutambua hatari mapema, kuwa na uvumilivu wa haijulikani, na kutotegemea majaribio ya mwisho katika mchakato kama gari kuu la kugundua sifa za utendaji wa bidhaa.  <response>: Program managers have good reasons to identify risks early, be intolerant of unknowns, and not rely on testing late in the process as the main vehicle for discovering the performance characteristics of the product. 