i mean we almost certainly as we become more dependent on the map we lose some of our natural navagation sense and that almost is certainly being amplified by gpss and stuff like that and that's not to say that those technologies are bad, but the benefits don't far out weigh the costs, but we do have to realized that whenever we adopt a technology we're adopting, we're amplifying some part of ourselves, but we're also reducing some of our old skills and handing them over to technology.