Re: DIS: The Maze Craze
From Stephen Kennedy <ste...@maths.tcd.ie>
· alt.ascii-art
· 5 Mar 1994 12:22 · View full thread
· report
>No, it isn't, if you're trying to be precise. *Regardless* of which way >you do the maze, forward or backward, you reach a point where you hit >an intersection that looks like: >} 8 8 8 >} 8 8 8 >} 8aaa8 8aaaa >} 8 X >} 8 a aaaaa >} 8 8 >} 8 8aaaaaaaa >And you know nothing about *ANY* of the other three paths. Whether you >enter it from the top or enter it from the side, you still have one >chance in 3 of guessing right, regardless of which way you're doing >the maze. Again, we run into the unstated assumption about what >you are allowed to 'know' when you enter a cell and must make a decision. >Certainly from cell X, you cannot _see_ the exit [in the normal >sense of the term 'see', and while we agree that it is nearby, if the >maze were made infintessimally more twisted, say: >} 8 8 8 >} 8 8 8 >} 8aaa8 8aaaa >} 8 X >} 8 a aaaaa >} 8 8 >} 8 8aaaaaaaa > | <--- > |___________ >Is it *now* still obvious that if you enter cell X from above that >a turn to the right is the way out? what if it looks like... 8 8 8 8 8 8 8aaa8 8aaaa 8 X 8 aaaaa 8 8 aaaaaaaa you still have the three choices from the start, but going the other way you have a clear line of sight and IT IS immediately obvious which is the way out. ,d 88 ,adPPYba, MM88MMM ,adPPYba, 8b d8 ,adPPYba, ste...@maths.tcd.ie I8[ "" 88 a8P_____88 `8b d8'a8P_____88 ken...@unix1.tcd.ie `"Y8ba, 88 8PP""""""" `8b d8' 8PP""""""" aa `]8I 88, "8b, ,aa `8b,d8' "8b, ,aa `"Ybbd8"' "Y888 `"Ybbd8"' "8" `"Ybbd8"'
Original message headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f996b,b912ea8e4126e777 X-Google-Attributes: gidf996b,public X-Google-ArrivalTime: 1994-03-05 04:22:29 PST Path: gmd.de!xlink.net!fauern!news.th-darmstadt.de!zib-berlin.de!netmbx.de!Germany.EU.net!EU.net!ieunet!maths.tcd.ie!not-for-mail From: ste...@maths.tcd.ie (Stephen Kennedy) Newsgroups: alt.ascii-art Subject: Re: DIS: The Maze Craze Date: 5 Mar 1994 12:22:29 -0000 Organization: Dept. of Maths, Trinity College, Dublin, Ireland. Lines: 57 Message-ID: <2l9ti5$p3...@salmon.maths.tcd.ie> References: <Nve...@emr1.emr.ca> <E6Oqu*wb...@fantasyfarm.com> NNTP-Posting-Host: salmon.maths.tcd.ie
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