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knows

Knowledge is a familiarity or awareness, of someone or something, such as facts (descriptive knowledge), skills (procedural knowledge), or objects (acquaintance knowledge) contributing to ones understanding. By most accounts, knowledge can be acquired in many different ways and from many sources, including but not limited to perception, reason, memory, testimony, scientific inquiry, education, and practice. The philosophical study of knowledge is called epistemology.
The term "knowledge" can refer to a theoretical or practical understanding of a subject. It can be implicit (as with practical skill or expertise) or explicit (as with the theoretical understanding of a subject); formal or informal; systematic or particular. The philosopher Plato argued that there was a distinction between knowledge and true belief in the Theaetetus, leading many to attribute to him a definition of knowledge as "justified true belief". The difficulties with this definition raised by the Gettier problem have been the subject of extensive debate in epistemology for more than half a century.

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  1. S

    Cellar conversion - digged and found this manhole , anyone knows what is it?

    I am doing a DIY project and trying to convert the under hallway cellar of a typical Victorian terraced house. I started digging the floor to increased the head height and found a manhole which seems to be from the sewage drainage, but to be honest I don't know. It has three pipes coming into...
  2. D

    Out of fresh ideas and no1 knows lol Ahh HELP

    Alright everyone Posted on here ages ago got fantastic advice and a boiler recomenedation. This is the story All new rads x5 with old pipework and combi. Had a poor ideal isar he30 boiler loosing pressure. Isolated rads from boiler which is in the loft so highest part of the CH...
  3. J

    Blocking the vent/overflow pipe

    Hi. I posted this to relevant thread few days back but there was no response so I'm trying a new thread. I have gravity system with solid fuel stove and oil boiler with dual coil cylinder. Everything worked fine until I replaced the oil boiler with an air to water heat pump. The new heat...
  4. A

    Used van warranty who knows

    I might be picking up a van tomorrow, from a dealer. Not a crazy amount of money but enough. Says there is a 3 month warranty. I have had a look at citizens advice - not sure how reliable the info is. Hoping someone on here is clued up. I thought as a company selling a vehicle, then the vehicle...
  5. C

    colin

    I have a remeha avanta plus 35c combi boiler only 3 years old. Worked fine until recent service. When heating the radiators there is a bang every 1-2 minutes. I took the front cover off and can see a flash in the black plastic housing connected to fan. Suspect it may be a mini explosion Spoke...
  6. I

    Who knows about Toyota Hiaces?

    Well I'm off on my never ending cycle again for a new van but this time I'm intent on actually getting one! im pretty much set on a last generation of the hiace as hear say would suggest unparalleled reliability. The prices seem to be all over the place but I reckon on spending about 7k max...
  7. A

    Who knows anything about Powermax 155 boilers?

    Hi guys been asked to have a look at a powermax 155, HW is working fine but when advance CH is put on it trips the RCD. I had something similar in the flat opposite a few months ago. Same boiler - HW fine but when room stat turned up RCD would trip - the CH pump had been affected by a leak...
  8. B

    the customer sometimes knows best :-)

    went to an elderly couple yesterday to change a pair of basin taps - the chap is 85 and tells me the stop tap turns off 3 houses - I question his theory as the stop tap is under the sink 14" up from lead rising main and goes straigt from what I could see into his bathroom above so I turn it off...
  9. Z

    Boiler stopped working

    Good afternoon I have an oli burner, Riello RD3 We ran out of oil and now its refilled I can't get the bolier to work . First off the reset only started it for about 1 min, so I loosened the allan key screw and let out the bubbles and oil ran clean. The burner then worked for about 15mins but...
  10. K

    Public knows best

    So many people dont believe you when you've trained and this is your profession! Take my parents for example: COMBI BOILER Run DHW and pressure drops from 1bar to 0.5bar. Said its most likely expansion vessel or crack in heat exchanger Their reply 'no it isnt, the hot water just needs...
  11. T

    looking for someone who knows Ariston boilers (SE London)

    Hi Im going crazy over my Ariston Mircogenus 24 boiler (6 years old). Its not heating water properly and you only get some hot water to the nearest bathroom when the water pressure is lowered. The ensuite gets no hot water at all! The hot water to taps is always better. Maybe something to do...
  12. 8

    Any builders in here.A piece of wood hold remaining chimney up

    Ive been in the attic of the house im renting.We are moving out wekend and moving back to the house we own.The land lady said they had the chimney removed right up in to the attic so tonight i took a look to find its supported by a piece of wood a few inches thick holding the rest of the chimney...
  13. E

    Viesmann 60kw gas valve

    I'm on a commercial job installing a 60kw viesmann heat only boiler. We looked at the gas valve that comes with the boiler and it's spring loaded it did have a little pin on the inside which we though wasn't doing anything and looked stuck so we popped it out! Not sure what it does but if any...
  14. S

    anyone know anyone that knows how to wire a heating system

    Can anyone recomend anyone in the Poole/Bournemouth area that knows there stuf when it comes to wiring? I can do most of it myself and can basic fault find on heating systems but I have had a couple of jobs lateley that I have had to turn down as I didn't want to get involed. One of them, I...
  15. MarkAqua

    Hands up who knows about.................

    Altech Valves - Who make them and where/how do I get in touch with them? I've used google but all I can find is Ashworth who distribute them I rang them and they are part of the travis perkins group or something along those lines, and werent the actually manufacturer of Altech. I'm talking...
  16. SimonG

    When the cust knows best.

    Just had a call from a customer. Leaking rad, bought a new one, different size, needs to be fitted tomorrow as new carpets coming friday. I can move stuff around and fit it in tomorrow afternoon. So I ask is it open vented or sealed - don't know, but you'll have to drain down he says. More than...
  17. D

    Just a show of hands!!

    how many of you plumbers who are Part P defined scope have under taken electrical work beyond the scope your allowed!! not a witch hunt just curious!!
  18. B

    anyone knows cts training?

    anyone knows cts training course? is it good?
    • bluesky
    • Thread
    • acs anyone building courses energy fix gas gas safe introduction knows nvq portfolio problem register rubber safe service training waste website work
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  19. W

    Who knows about tiling?

    Doing my first bathroom, all going ok. Little bit of tiling to do. Removed old tiles. They came off easily, little adhesive had been used. Underneath there are patches of plaster covering the area that was tiled with frequent but smallish gaps here and there revealing bare concrete. Don't know...
  20. Dan

    ContractorForum: Who knows?: Why when doing restoration work on old victorian/minton

    ContractorForum: Who knows?: Why when doing restoration work on old victorian/minton floors you nearly always come across one of.. http://bit.ly/8YE0TH More... Follow us on Twitter.
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