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Does this joke make sense?

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Does this joke make sense?

Old 04-02-07, 06:08 PM
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Does this joke make sense?

One of my co-workers said to me today while on a call, "Why are the tops of man holes round?" I asked why? He replied "because if it was any other shape it would fall in."


...I don't get it.
Old 04-02-07, 06:11 PM
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Old 04-02-07, 06:14 PM
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I would imagine it's one of those jokes that's easy to over-think, because I don't get it either.
Old 04-02-07, 06:16 PM
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It isn't a joke. Manhole covers are circular because its the only shape that keeps you from turning it on its side and dropping it down the manhole.
Old 04-02-07, 06:17 PM
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Wha?

= J
Old 04-02-07, 06:19 PM
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http://en.wikipedia.org/wiki/Manhole_cover

Why are they round?
The question of why manhole covers are typically round, at least in the U.S., was made notorious by Microsoft, and Tony Martinez when they began asking it as a job-interview question.[2] Originally meant as a psychological assessment of how one approaches a question with more than one "right" answer, the problem exerts a strange fascination on people, who seek to find alternate explanations, from the pragmatic and satirical to the philosophical. One practical answer being, "Manhole covers are round because manholes are round."[2]

Reasons for the shape include:

A round manhole cover cannot fall through its circular opening, whereas a square manhole cover may fall in if it were inserted diagonally in the aperture (A Reuleaux triangle or other curve of constant width would also serve this purpose, but round covers are much easier to manufacture.)
Round tubes are the strongest and most material-efficient shape against the compression of the earth around them, and so it is natural that the cover of a round tube assume a circular shape.
Cylindrical holes are easier to dig.
The bearing surfaces of manhole frames and covers are machined to assure flatness and prevent them from becoming dislodged by traffic.
Round castings are much easier to machine using horizontal boring mills.
Circular covers do not need to be rotated to align them when covering a circular manhole.
Human beings have a roughly circular cross-section.
A round manhole cover can be more easily moved by being rolled.
If an automobile rolls over a dislodged manhole of another shape, the sharp corners could puncture the automobile's tire, whereas a circle doesn't have corners.
Tradition
Aesthetics
However, other manhole shapes can be found, usually squares or rectangles. Nashua, New Hampshire may be unique in the U.S. for having triangular manhole covers that point in the direction of the underlying flow. The city is phasing out the triangles, which were made by a local foundry, because they are not large enough to meet modern safety standards, and larger triangles cannot be found.
Old 04-02-07, 06:46 PM
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So, it wasn't a joke; it was a fact. Dammit, I had given up learning facts for Lent.
Old 04-02-07, 06:52 PM
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Why are toilet seats round? So you wont fall in.

Old 04-02-07, 07:04 PM
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that only works if your butt is round.
Old 04-02-07, 07:20 PM
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Yeah, it's not a joke. This was one of the questions Microsoft used to use in their interviews, until word got out that was one of the questions and people would show up and say "so don't fall in" before the question was even asked.

~ According to the book, How Would You Move Mt Fugi?
Old 04-02-07, 07:33 PM
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I heard that joke last night on some TV show. I can't remember which one but I'm guessing he saw the same one.
Old 04-02-07, 10:10 PM
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I never knew about the MS interview question. I just thought it was common knowledge as to why they were round.

I guess I'll be asking this to everyone tomorrow at work.
Old 04-02-07, 10:24 PM
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What's a henway?
Old 04-02-07, 10:38 PM
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Originally Posted by Numanoid
What's a henway?
About tree fiddy?

Old 04-03-07, 08:58 AM
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Originally Posted by Ronnie Dobbs
I heard that joke last night on some TV show. I can't remember which one but I'm guessing he saw the same one.
umm... It's not a joke. Please see the rest of the thread for an explanation.
Old 04-03-07, 09:56 AM
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Encyclopedia Brown had a stumper about this very same question. He solved it in about 30 pages.
Old 04-03-07, 10:22 AM
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Why are cabooses apple shaped?
Old 04-03-07, 10:54 AM
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Originally Posted by M2theAX
One of my co-workers said to me today while on a call, "Why are the tops of man holes round?"
Um, I hate to tell you this, but that's not a joke.

It's a line.
Old 04-03-07, 11:12 AM
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Geez, my 8th grade math teacher asked us that in 1975.

It wasn't a pickup line back then.
Old 04-03-07, 11:31 AM
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You want a manhole cover joke, I've got one.

From 2000 through 2003, the Georgetown section of DC had problems with their manhole covers. Underground explosions and fires were causing manhole covers to go flying off in random directions, instantly creating deadly projectiles that could maim or even kill passing pedestrians.

http://www.washingtonpost.com/wp-dyn...ials/manholes/
http://www.opc-dc.gov/explosions.htm

The electric company (PEPCO, owners of the manholes) blamed Washington Gas. Washington Gas blamed PEPCO. They went round a few times before forming a joint committee to try to address the problem.

Their solution? Heavier covers.

Last edited by kenbuzz; 04-03-07 at 11:34 AM.
Old 04-03-07, 11:33 AM
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Originally Posted by mndtrp
Encyclopedia Brown had a stumper about this very same question. He solved it in about 30 pages.
Encyclopedia Brown is awesome. I loved those books when I was a kid.
Old 04-03-07, 11:36 AM
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Originally Posted by mndtrp
Encyclopedia Brown had a stumper about this very same question. He solved it in about 30 pages.
I absolutely *loved* Encyclopedia Brown! Those were supposed to be "boy" books, but I read them anyhow.
Old 04-03-07, 11:49 AM
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Originally Posted by Bandoman
Encyclopedia Brown is awesome. I loved those books when I was a kid.
You are lying!

HOW DID GROUCHO KNOW?

Spoiler:
Because Bandoman is illiterate. Groucho realized this when he noticed Bando was reading the WSJ upside-down.
Old 04-03-07, 12:03 PM
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Old 04-03-07, 03:16 PM
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I thought it is because man penis is round. So to better accommodate anal people, we made man holes round.

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