kosher supervision

Question

Dear Rabbi Abadi, I have a few questions that I believe to be at the heart of what you are transmitting here at this site: 1. If I write to a company and they assure me that they do not use animal ingredients or fats in their products, why should I believe them? Perhaps they are saying this so that people who are kosher and who are vegetarian will buy their products. True - they have to list their products, but often we do not know whether one of their listed products is animal or vegetable-based. 2. A Mashgiach visits a company once in a while - perhaps once every few months. How can we be sure that in the meantime the manufacturing process and/or ingredients haven't changed? (It is always possible that ingredients have changed and that it will take a few weeks or months before the new ingredients are listed in all their packages). I understand that the law requires companies to list all the ingredients in their products. However, we often see kashrut organizations warning the public that "such and such product is no longer kosher". My question: since when? If the product is truly no longer kosher, then how long have people been eating or drinking it before news comes out (and people are made aware) that the product is no longer kosher. Weeks, months, and even if only one day, it would mean that people most likely ate or drank something that wasn't kosher. What I'm trying to say is that with a kosher supervisor or not, with the law obliging ingredients to be listed or not, most products that we buy in the supermarket may be non-kosher even if they have a kosher seal. We are buying them and eating/drinking them by taking a leap of faith - that indeed, the company is being honest, that the Mashgiach (if there was one) did not overlook anything or make a mistake, and that no new ingredients were added to the product and not yet listed. Even if there is a Mashgiach, he is not there 24 hours a day, 7 days a week, there is always the chance that something might not go right. If G-d forbid, we do end up eating or drinking non-kosher foods or drinks due to someone's negligence or dishonesty, especially repeatedly and over a long period of time, who will atone for this? I often read the questions and answers posted in this forum. You have repeatedly argued that a Mashgiach is not necessary. (In fact, I believe that in the Talmud, Tractate Berachot, a similar idea is mentioned regarding an Indian kind of food). If you pardon my chutzpah, I would like to argue a different view: even with a Mashgiach on site, perhaps we should not be eating anything industrialized. Because there is always the chance that we are eating or drinking something that is not kosher. I apologize for the length of this message, but once again, I believe that it brings up fundamental questions about kashrut in our day and age. Thank you very much for your time and efforts. Wishing you and yours a good and meaningful Chodesh.