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Stu Savory ;-) School report for Stu Savory
Eunoia, who is a grumpy, overeducated, facetious, multilingual ex-pat Scot, blatantly opinionated, old (1944-vintage), amateur cryptologist, computer consultant, atheist, flying instructor, bulldog-lover, Beetle-driver, textbook-writer, long-distance biker, geocacher and blogger living in the foothills south of the northern German plains. Not too shy to reveal his true name or even whereabouts, he blogs his opinions, and humour and rants irregularly. Stubbornly he clings to his beliefs, e.g. that Faith does not give answers, it only prevents you doing any goddamn questioning. You are as atheist as he is. When you understand why you don't believe in all the other gods, you will know why he does not believe in yours.

Oh, and after the death of his old dog, Kosmo, he also has a new bulldog puppy, Clara, since September 2018 :-)

Some of my bikes


My Maths Pages

Wednesday, October 20, 2021

Bernd's medal, revisited

Back in september, I told you about friend Bernd getting a medal, the Bundesverdienstkreuz auf Band (Federal Cross of Merit), for volunteer service to the community for 40 years or so. On monday we got together with half a dozen old friends and I'd asked him to bring his medal along for all to admire. Here are two photos in more detail. We are all so proud of him :-)

Wow! just Wow! I'm speechless...

...and, to be honest, just a little envious ;-)

Wednesday, October 13, 2021

Kirk boldly went...

William Shatner, aged 90, who played Captain Kirk in Star Trek for many a long, long, long year, boldly went to space today aboard Bezos' little rocket. Finally. But boldly? Not really. Not as the captain on board, nor even as a pilot. Just locked up in an airtight can in the best traditions of Laika and Ham or indeed Schroedinger's cat. A can controlled from the ground and otherwise fully automated - just like Gagarin's ship - he and 3 others barely reached space (getting to 106 kms) and after 10 minutes - only 3 of which were weightless - it was all over. Much ado about nothing. Albeit, the 4-passenger box had windows (not Linux) but Shatner didn't get to see even a single Klingon ship let alone a Vulcan :-(

Still, it was a freebie, Bezos paying (just for the advertising publicity). They didn't even take the opportunity of naming the tin can "Enterprise" :-( Star Trek was first broadcast in September of 1966 and I am proud to say I never saw a single program thereof; 55 years of being unnerdy :-)

Comments (2)
Billions of Versions... wrote " Well, I can’t say that. I did watch Star Trek. And as the series moved on, the sets got better and better. Watching the original series now is like watching the old Buck Rogers series." To each his own.
Schorsch (D) points out that"While Bezos' rocket can barely manage the 100 km lower bound for space, Musk's Space-X can reach orbit and carry people and loads to the ISS. !!!" Yep, not just marketing hops!

Monday, October 11, 2021

Mailserver back up again :-)

Just to notify anyone trying to email us. Our Mailserver is back up again. But please repeat any mails sent after October 3rd please, as they may well have got lost.

On a similar note, when Whatsapp returned after the Facebook crash last week, I had a negative number of messages??? WTF does that mean?

Friday, October 8, 2021

Mailserver down :-(

Just to notify anyone trying to email us. Our Mailserver is down. So I'll have to wait until next week to get the mail service provider to fix it. Seems to me that his Xfer spooler is running out of memory.

So hold off mailing us for a while please, lest it get lost. I'll put up a notice when it is running again. Then repeat any mails after October 3rd please.

Wednesday, October 6, 2021

Multiplying Roman Numerals

Back in spring I was teaching a class of 12-year-olds arithmetic to different bases (e.g. 8,12,16 etc) and the subject of Roman Numerals cropped up, so we did some arithmetic in Roman Numerals.

Now addition is dead easy, just tip all the digits/letters (I,V,X,L,C,D,M) into a common heap, sort them l2r large to small, then simplify any multiples (e.g. IIIII=V, VV=X, XXXXX=L, LL=C, CCCCC=D, DD=M) . Example 28+32 = 60 is XXVIII+XXXII put in one heap getting XXVIIIXXXII, sorted is XXXXXVIIIII, simplified is LVV = LX which is 60 as expected. Subtraction is similarly easy.

Multiplication in Roman Numerals is a little harder. We chose two numbers, e.g. 17 and 23 which you can multiply in your head in less than a second because there is a shortcut known as difference-of-squares. 17=20-3 and 23 = 20+3. the shortcut is that (a+b)*(a-b) = a2-b2, so 17*23=400-9=391. Like I said, in your head in less than a second!

Now do it in Roman Numerals without knowing that shortcut. I showed them a method of multiplication used by e.g. russian grandmothers (babushka), you may not know it yet.

Write the smaller number in the left column and the larger in the right column as shown below.
17 23, now halve the left column, (rounding down if needed) and double the right one,
8 46, and repeat
4 92, and repeat
2 184, and repeat
1 368, stopping at 1 in the left column.
Now just add up the entries in the right column which have an odd number in the left column, so 23+368=391, the correct product of 17*23 :-)

Having understood the method, the class then did it in Roman Numerals, halving and doubling in Roman Numerals can be done in your head or with paper and pencil if needed (or a damp clay tablet and a stick).
Adding up the entries in the right column which have an odd number in the left column, we got XXIII+CCCLXVIII= CCCLXXXXI which is 391 :-)

Link to the previous month's blog.
Recent Writings
Bernd's medal, revisited
Kirk boldly went...
Mailserver back up again
Mailserver down :-(
Roman Numerals
Fortuitous names ;-)
Party strongholds
Election imminent here
30 years of MC Tours
World of Beers
Nine Eleven
GovernMental Joke
Afghanistan Joke
TWAICE revisited
Bicycle-Bernd's gong
Bierbaums Nagel
RIP Charlie Watts
Sky Lights
Going Walkies...
First Nuke
Mobile banking truck
James Bond's mnemonics
Flooding here in Germany
Bastille Day
4-2-3 and 31
Scrap Metal Statue
Oldtimer Quiz
Americans abroad
Mooney Fly-In
G7 meet in Cornwall, UK

Ain Bulldog Blog
All hat no cattle
Balloon Juice
Billions of Versions...
Cop Car
Digby's Hullabaloo
Earth-Bound Misfit
Fail Blog
Finding life hard?
Observing Hermann
Silicon Graybeard
Starts with a Bang
Yellowdog Grannie

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This Blog's Status is
Blog Dewey Decimal Classification : 153
FWIW, 153 is a triangular number, meaning that you can arrange 153 items into an equilateral triangle (with 17 items on a side). It is also one of the six known truncated triangular numbers, because 1 and 15 are triangular numbers as well. It is a hexagonal number, meaning that you can distribute 153 points evenly at the corners and along the sides of a hexagon. It is the smallest 3-narcissistic number. This means it?s the sum of the cubes of its digits. It is the sum of the first five positive factorials. Yup, this is a 153-type blog. QED ;-)
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