Trdijo, da bi moralo biti tako vedenje predvideno, ker, ob tem da se te naprave ponavadi uporabljajo v posebnih okoliščinah, kot na primer na prostorih za taborjenje in v šotorih v kratkih obdobjih leta, vsi uporabniki ne berejo natančno navodil za uporabo, niti ni dovolj luči za branje navodil, zaradi česar dejansko obstaja nevarnost, da uporabnik kartuše ne bo vstavil pravilno.
They claim that such behaviour should be foreseen since, as these applicances are typically used in particular conditions such as on campsites and in tents for short periods of the year, not all users systematically read the instructions for use nor is there enough light to read them, so that there is de facto a risk that the user will not insert the cartridge properly.