ɐnˈʌðɚ kəntɹˈɪbjuːɾɚɹ ɪz ðə sˈɛlfɪmpˈoʊzd pɹˈɛʃɚ tə pɹədˈuːs sˈʌmθɪŋ tə sˈɛl, ˈiːvən ɪf ðæt θˈɪŋ ɪz dᵻfˈɛktɪv.
Another contributor is the self-imposed pressure to produce something to sell, even if that thing is defective.