Nota Bene

So what else can I tell you about Say-Cheese-Chelles? I just have to tell you about the cleanliness here…

In a full three days here, which meant a lot of ocean-gawping while strolling along beaches, we didn’t come across one single piece of waste plastic, not one bottle, not one soda can, not one juice carton, and no other inorganic waste whatsoever in the sea. All of it perfectly garbage-free. And as a result – no negative emotions either :-)…

The islands themselves are neat and tidy too. All the roads well tarmacked, all the houses (that we saw) thoroughly kempt. There are tatty shacks too, but they were only visible from up above in a helicopter and somewhere in the middle of the island (we were always by the shore when on the ground). Everything neatly painted, cleaned, trimmed and groomed. And hardly any garbage anywhere; you really have to look for it to find it.

Read on: where’s all the garbage?…

The second-largest famous thing of Seychelles is its giant tortoise. Specifically it’s from the Aldabra atoll, one of the Outer Islands of Seychelles, but it’s now featured on many of the other Seychelles islands too. Lovely creatures – and they don’t mind your taking their pics or even touching their shells :-):

All righty boys and girls, herewith – back to my customary ongoing narration after a short pause caused by all sorts of events being packed into a short length of time on the road. Ready? Popcorn procured? Beverage beakered? Then we shall continue…

The Indian Ocean: the Indian WhOcean! Its shores include those of many an esteemed continent and its water anoints many a beautiful island. I’ve been on all of the continents – including the lesser-visited southern one – but as to the list of islands I’ve some way to go yet until I can say I’ve been to them all (and checked out their historical/geographic/touristic/beautific highlights, preferably after some useful business activity, as per the usual template).

But as you’ll have noticed long ago, I usually just gloss over the useful business activity and get straight to the fun bit. Well, some things never change, so here you are folks – straight to the chase: a short post on my recent trip to Seychelles!

The Internet – the one we all know and couldn’t do without for a second today – is still only a relatively new phenomenon. Just 20 years ago there was no Google, no Yahoo… Just 12 years ago you could only get yourself an account on Facebook if you were a student at an Ivy League university; the only tweets made back then were the original, analog versions; and iPhones were a mere figment of Steve Job’s imagination.

(The first iPhone appeared just 10 years ago; it had no front camera, no video, no GPS, no App Store! It’s like with many things today we take for granted – just a decade earlier they’d seem simply impossibly progressive and crazy!)

Then there’s the terminological confusion regarding the word ‘Internet’. The ‘Internet‘ is used to refer to all sorts of stuff while, strictly speaking, the Internet is a super-network joining up a huge quantity of local networks connected among themselves with TCP/IP protocols. This infrastructure uses the Worldwide Web, i.e., a network of millions of webservers all around the world, and this is where the likes of Google, Facebook and all the other zillion sites live. It’s namely this informational environment folks refer to when they tell you to find something on the Internet or ask if you’ve been banned from using the Internet at work. However, besides the web (www) infrastructure of the Internet, all sorts of other things are used, like various peer-to-peer networks, email, FTP servers, and other useful stuff like CCTV, televisions, ATMs, cars, and myriad other IoT devices.

But the theory and practice of modern computer networks aren’t what I want to talk about today. Instead, I’d like to talk about… archaeology! Sort of. I want to tell you about four proto-Internets of the past (in the widest meaning of the word ‘Internet’).

Project Cybersyn (Chile)

Read on: Minitel for Teletel…

Of course, I’m bound to get a lot of spam in my inbox – probably more than most. Decades of giving out my business card left, right and center; our domain included on presentation slides, in publications and catalogs and so on. Then there’s my email address’s simplicity. Sometimes employees’ blown email addresses we ‘leave out in the cold’ as spam honeypots while setting up new, slightly amended email addresses for the employee. But we can’t have that for me now can we? No. Because – first – I need to keep track of precisely who the enemy is, and – second – I want to personally be able to monitor the quality of our antispam protection. And I also don’t mind a few extra laughs now and again.

Much like entomologists with their butterflies, I file all incoming spam in a separate folder, check out the verdicts, and determine tendencies and false positives, while I forward missed samples to our antispam lab.

Curiously, since the beginning of the year the amount of spam has gone through the roof! And after studying its structure and style, it looks like most of it comes from one (1) source! Almost all the messages were in English (with just two in Japanese), and – main thing – 100% of this spam was detected by our products! I turned to our specialists… – and it was confirmed: it was a huge tsunami-like wave of a specific type of spam – snowshoe spam. This is unusual as normally around New Year spam activity falls in volume.

* Data for 1-10 January

And here’s the data on how the share of snowshoe spam changed on the most active day – January 7 – in the inboxes of our corporate domain:

So just what is this snowshoe when it’s at home, and how can it be protected against?

Read on: Snakeoil…

Our introduction into Viennese nightlife occurred most unexpectedly: we were invited to a ball! A real ball, which takes place in a large concert hall somewhere in downtown Vienna. Woah!

To the sound of chamber music, with the men in tailcoats (white tie) and the women in ball gowns, the guests gathered for the 10pm ceremonial kick-off to the ball. The ceremony was most official – formally opened by two government ministers (of internal affairs and foreign affairs). Here’s the latter making his speech. Yes – he is young for a minister :-):

So, if I was there, why did I take a pic of a TV screen and not of the (young) man himself? Simply because there were that many folks in the hall – literally thousands! (Clearly evening-wear rental and/or sales must is a profitable business in the Austrian capital). So many ball-goers, in fact, that we couldn’t even get into the hall for the opening ceremony, which was just like you see in the old films: guests being paraded in front of the royal/ministerial hosts, with a few formal words exchanged with each:

A little later things calmed down a bit and we managed to squeeze our way inside. And this is what I saw…

The debutantes’ dance, or whatever it is they call it: young couples new to such a ball. They take dozens of lessons on how to do ballroom dancing so they can dance as per requirements at the ball. The ball itself is something like an exam, or so it seemed to me. Or simply a demonstration of the newbies’ cavorting talent. The moms and dads in the audience must have been very proud:

Vienna, capital city of Austria, is one of the few European cities which for some perplexingly mysterious reason always seems to not feature in my busy schedule. Or, rather, I seem hardly ever to feature in Vienna’s busy schedule.

I’ve been here a few times, but each time I never got even a minute of tourism in. It was always airport > hotel > conference > speech > meetings > interviews > dinner > sleep > breakkie > suitcase > taxi > airport. Boo. For Vienna is… venerable, and deserves much more time and attention. Well just the other day I finally did it – finally took some time out from that ever-present busy business schedule of mine and invested it into having a stroll around the center of this magnificent city…

St. Stephen’s Cathedral. Alas, we didn’t have time to go inside (so much for spending quality time in Vienna:). That will have to wait until next time…

Read on: Hundertwasser…

In my previous post we had a math competition. Let me remind you of the task:

Using +, -, x, ÷ and (), make the row of numbers from 10 to 1 equal 2017.

That was an easy task, which got more complicated.

How about 9 to 1 with arithmetic equalling 2017? 8 to 1? 7 to 1? And down to just 1?

Before I could say ‘What January blues when you’ve got arithmetic in your life!?!’ I had answers from people in our fan club streaming in! And some of them (remember, there are different possibilities to get the same answer of 2017) were so wonderfully interesting, while others were so interestingly not-quite-elegant enough, that, well, I just had to share some of them with you…

Read on: A real math indulgent…

Hi folks!

Phew. After a few days’ rest and recuperation since last week’s merciless working schedule at the WEF, I do believe I’ve recharged my batteries sufficiently to be able to continue my notes on my four-day stay in Davos, where the WEF took place.

First – rewind: some history…

So, just why is it that this famous yearly forum – infamous to some, helpful to others – takes place in this particular tiny village in Switzerland?

I’ve got two versions…

Read on: A story of a remote quite place…

As many will already know, the number 2017 is a prime number; that is, it can be divided without a remainder only by itself and 1. Must say, the theory of prime numbers is a wholly interesting one and an extremely useful one too, as any cryptographer will tell you :).

But today I’ll be writing about something different. See, based on the fact that 2017 is prime – or ‘simple’ – many, myself included, are anticipating a simple, straightforward and calm year 2017, especially since 2016 was a bit of a rotter. Let me show you why.

Like I said, prime numbers are those that can only be divided by themselves and 1 without leaving a remainder. Non-prime numbers are called composite numbers, incidentally.

Turns out that 2016 is not only a composite number but a very composite number! It has a whole eight divisors. Grab a calculator your smartphone and test it for yourself:
2016 = 2 * 2 * 2 * 2 * 2 * 3 * 3 * 7

Whoah! Even the quantity of divisors is anything but simple, since 8 = 2 * 2 * 2.

So what about other years? Was 1917, the year of the Russian Revolution, a ‘prime’ year, for example? No, it wasn’t. 1917 = 3 * 3 * 3 * 71. Just four divisors, but they’re kinda poignant – and prophetic of nothing much good.

So what about other very prime/simple years, and other very non-prime/non-simple ones? Ok, let’s narrow this down a bit to 1980 through present day…

Prime/simple years:
1987
1993
1997
1999
2003
2011

And in the near future there are a few more prime/simples:
2027
2029

(eek, that’s a lot of non-simple years until then)

The most non-prime/non-simple years were:
1984 = 2 * 2 * 2 * 2 * 2 * 2 * 31 (seven divisors)
2000 = 2 * 2 * 2 * 2 * 5 * 5 * 5   (also seven)

There were six divisors in 1980, and there’ll be six in 2025. All other years can be called semi-prime/semi-simple.

But I digress…

Now, in the popular British mathematical journal The Guardian :), readers were recently teased with a… brain teaser. In the blanks between the sequence of figures 10 9 8 7 6 5 4 3 2 1 you need to add arithmetic symbols (+, -, x, ÷, (),) – as many as you like – so as to get the number (year) 2017.

For example, if you add arithmetic signs as follows you get 817:
10 * 9 * (8 + 7 – 6) * (5 – 4) + 3 * 2 + 1 = 817

But how do you add arithmetic to get 2017?
10?9?8?7?6?5?4?3?2?1 = 2017

Come on, have a go!

As for me, in nine minutes I got the equation to equal 2017 by kinda wonky arithmetic (I made the ‘3’ and ‘2’ = ’32’!); then, in around 15 or 20 minutes I got the answer in a proper way without bending the rules. I say ‘a’ way: there are different ways of getting to 2017!

So, tried it yet?

Ok, let’s make it harder: Now take away the 10:
9  8  7  6  5  4  3  2  1 = 2017

Read on: How to make 2017 out of 1?…