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<p>[reposting to list]</p>
<p>The perfect is the enemy of the good.... things will rarely be 100% right. Be satisfied with "good enough". Now, if someone could just come up with a workable definition of "good enough".... Or failing that, an objective test to show whether A is better (closer to perfection, without needing to define that) than B....</p>
<p>--colin</p>
<div> On 2017-06-11 19:30, James wrote:</div>
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<div dir="auto">Well mapping from imagery would be "wrong" then as a lot of times it's misaligned with the "real world" short of buying a 100 000$ gps receiver with 1cm accuracy, there will always be "accuracy problems"</div>
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<div class="gmail_quote">On Jun 11, 2017 1:15 PM, "Colin Smale" <<a href="mailto:colin.smale@xs4all.nl">colin.smale@xs4all.nl</a>> wrote:<br />
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<p>On 2017-06-11 18:18, Eric Gillet wrote:</p>
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<div class="gmail_quote">On Thu, Jun 8, 2017 at 10:58 AM, Frederik Ramm <span><<a href="mailto:frederik@remote.org">frederik@remote.org</a>></span> wrote:<br />
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">I am concerned that reckless users will use your tool to basically go<br /> over the planet in a "task manager" fashion, running the matching for<br /> square after square, selecting all matches and hitting upload. (On the<br /> basis of "hey if 95% of matches are good then I am improving OSM, right<br /> - someone local can sort out the 5% bad apples".)</blockquote>
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<div style="font-size: 12.8px;">Should changesets which are less than 95% correct be disallowed on OSM ? That would block a lot of contributions !</div>
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<div style="font-size: 12.8px;">The easier it is to determine objectively whether data is "correct" or not, the higher the bar should be. For example, for highway=motorway we should expect nothing less than 100%. For many others, the criteria are just too fuzzy to say with reasonable confidence if data is "correct" or not so any discussion about tolerances is premature.</div>
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<div style="font-size: 12.8px;">--colin</div>
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