yep, they are useful. I consider comments to live at "conceptual" level while code lives at "physical" level. With this way,when you are debugging, your mind

yep, they are useful. I consider comments to live at "conceptual" level while code lives at "physical" level. With this way,when you are debugging, your mind can read code at conceptual level and easily disregard irrelevant blocks of code. without comments, i will need to mentally drop down at physical level and implement a compiler in my brain for the same results