In article ,
Mxsmanic wrote:

Dave Doe writes:

Why do you think an exact figure is important?

Hmm. So precision is all important when it comes to discrediting simulation,
but suddenly isn't a big deal when it comes to pilots flying the real thing?

A five-foot difference makes a sim inaccurate, but 25 feet is good for a
pilot?

How can both of these things be true simultaneously?

Because they're in different situations. One is talking about altitude
above the runway right as you're touching down, where the TOTAL distance
may only be five feet, and the other is talking about distance from the
runway where the TOTAL distance is three miles.

In other words, it's percentage that counts, not absolute accuracy. Five
feet wrong over the runway can mean you're off by 1000%. 25 feet wrong
when you're three miles away means you're off by 0.16%.

--
Mike Ash
Radio Free Earth
Broadcasting from our climate-controlled studios deep inside the Moon