There are certainly occasions where parchment paper and aluminum foil are not interchangeable, but when it comes to oven ...

Aluminum Foil: Best for high-heat cooking, grilling, and food preservation. Not suitable for microwaving and can react with ...

Once taken apart and unrolled, we would find two thin aluminum foils separated by a sheet of paper. It would be tempting to decide the foil were our ... with knowledge, we can better understand ...