<prompt> Translate the following text to EnglishKunaweza kuwa na ushawishi mwingi juu ya kile kinachotokea na ushawishi huu unaweza kuingiliana kwa njia zisizo za mstari, kwa hivyo kitengo cha mabadiliko katika pembejeo inaweza kuhusishwa na mabadiliko tofauti katika pato, wakati mwingine kuiongeza, wakati mwingine kupungua, na wakati mwingine bila athari inayoonekana.  <response>: There could be many influences on what is happening and these influences could interact in nonlinear ways such that a unit of change in the input can be associated with quite different changes in the output, sometimes increasing it, sometimes decreasing it, and sometimes having no discernible effect. 