Curiosity,
The thought went through my mind that the Torah in its darchei noam couldn’t possibly be expecting us to strain our eyes so badly over a tiny black speck floating in a vat of water.
Maybe the Torah expects us to just eat something else. You’re completely misapplying the concept of d’rocheho darchei noam. According to your interpretation, I could eat pig if I really had a hard time abstaining.
rob,
where is the limit??
Sam2 gave a very sensible limit – visible to the normal human eye. If someone has worse than typical vision, that wouldn’t make foods muttar to him which are assur to others. No one’s arguing for requiring a microscope; you’re creating a straw man.