Engineers are great- they're like laser beams. They are intense and highly focusable. But they don't illuminate a wide area when focused. OTOH, take the lowly, dim incandescent lightbulb. Not intense. Not very focused. But it lights up the whole room. Ok, now that everyone's got me pegged as the dim bulb in this group... (didn't think I was going to leave that one for someone else, did you?), let me finish my thought... Anyway, my point is that sometimes engineers are so focused that they don't see the big picture. But I'm not disagreeing about the need to know about read errors (or write errors for that reason). Regards, -dq