On Sat, Jan 20, 2018 at 12:04 AM, marc marc <marc_marc_...@hotmail.com> wrote:
> Le 19. 01. 18 à 23:42, Graeme Fitzpatrick a écrit : > > 1. A lighthouse is a usually tall building or tower that has a lamp at > > the top. > > has or had > Irrespective of technical definitions, I think you'll find that most people think a lighthouse has a keeper dwelling within. Those with slightly more knowledge understand that many lighthouses have been automated and no longer have keepers. I think you'll find that most people would think the following things characteristic of a lighthouse: 1) Has a light at the top. Not necessarily working. Not necessarily with any lamp remaining. But it has visible glass at the top which is (or was) there for a light to shine through. 2) Is large enough that it is capable of allowing at least one person to reside within even if nobody lives there now. 3) Is circular (or nearly circular) in plan view. Other shapes are possible, but circular is the one most familiar to them. That, I think, is pretty much how most people's minds work. Show them a photo of such a structure (with the photo taken in daylight) and they'll identify it as a lighthouse. If you then say it's been automated, they'll still say lighthouse (for lack of anything else to call it). If you tell them it no longer operates they'll say it WAS a lighthouse and still identify it as a lighthouse. If you mark something on a map as a lighthouse then that's the type of structure they'll be looking for. They'll be looking for that because most of them (at least those in the UK) will have seen a seaside postcard featuring a lighthouse that looks like that. Can I back that up? Yep. I just did a google image search for lighthouse. The results weren't affected by any previous search I've done because it's the first time in my life I've used google to search for lighthouse. Google's image classifier is based in large part upon users playing a "game with a purpose" that presents them with randomly-chosen images and they describe what's in the image. Those results are based on what people think a lighthouse looks like. You can see from the results that most photos were taken in daylight and there's no way of knowing if the lighthouse was manned or had a working light. Having said all that, I'll give my conclusion. Any tagging that does not conform to user expectations will be misapplied by taggers and misread by end-users, no matter what the wiki has to say about it. If it looks like a lighthouse (see google images) then it's a lighthouse. Whether it functions as a major light, minor light, beacon or doesn't function at all is for other tagging to describe. -- Paul
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