Years ago I didn't know it either. I was going fishing with a friend about 6 yrs ago and I reached out to a charter captain friend about where we should start.He told me C can and some numbers.I thought he was talking C can on the firing range.We took off toward the firing range C can and as I was watching the latitude and longitude numbers changing I realized we were going the wrong direction.I did some quick googling on phone and realized the error and where we needed to go.Took a big u-turn and eventually ended up where we needed to go.But the guys gave me that look like I was an idiot.Heard about it all day.Thank God we caught well that day.