Let me say I'm 100% with MadDogMurdock here, and if you check something like 7000 post back, immediately after the first binary interpretation of the symbols, I've immediately raised the same objection. And the difference in spacing is VERY CLEAR.
And it is even easier to note it, because the two pictograms on the left side, the -|- and the | - - are composed by the same "dash'n dots" EXACTLY, that are one | and two -, so their length, the pictograms width, should be exactly the same. That is not. And the left and right margins of the 4 pictos are perfectly aligned, so please, don't tell me there is a distortion.
MOREOVER:
it really is a misfortune, IMHO, that the interpratation of 3.142 is, by misfortune as I said, made of the same four numbers that make the most basic sequence in the universe, I mean: 1,2,3,4.
Really, why is there a need to let us know Pi ?! What use can we do of it?
It's not a real message from Aliens: it's David Braben and Michael Brookes fooling us with a riddle
Those pictograms, being either in a group or four, or two groups of two, mean something else.
I agree that the spacing is clearly different. The symbols are also slightly different too - the '|' are the same I think, but the top uses '-' and the bottom uses something like '.' - but more like boxes, vertically centred.
So, okay - let's ignore the bottom two. For now.
Potential interpretations of the top two symbols: '-|-' and '-||':
010 and 011 binary
Most significant bit first: 2 and 3
Least significant bit first: 2 and 5
- the attraction for this, I think, is the obvious similarity (nay - it's identical) between this and how humanity expressed numbers in binary on the voyager disk. Is there any real merit in that? Perhaps not in-game, no (only at a stretch). But taken as a group of humans setting a puzzle for a bunch of gamers, then it gains more kudos I feel.
Or it could be morse: dot-dash-dot and dot-dash-dash
Which is 'R' and 'W'
- The attraction for this is that we already have a precedent for morse from the UAs, and UPs clearly come from the same stock. On the flip side, this could reduce the chances of that. There's also the *obvious* problem: '|' instead of '-'. This drastically reduces the likelihood of it being morse for me. However we have to acknowledge - it does give two recognisable characters.
Another one:
'-|-' could be seen as '+'. But '-||' doesn't equal its natural partner '-'.
Or they could be crude diagrams of something, but now we're getting into the realms of wild interpretative variance: it's entirely unlikely any two observers would agree on any of them, which makes it really rubbish (garbage) as an attempt to communicate.
'-|-' could indicate and asteroid belt in a system map, perhaps. '-||' could mean two, side by side.
Or it could be concepts - like 'middle' and 'right'.
In evaluating these, and more besides, we also have to consider their placement: these two symbols undeniably line up with the two on the bottom, and are therefore undeniably placed in the 'corners' of the main image. So, regardless of whether they use the same symbols: there must be a relation there somewhere.
If we take the first, or even second interpretations (we've all) suggested above, and which must of us deem the most likely, then both those two bottom sequences can also be interpreted as either binary or morse. This, alongside their geometric relation both to each other and the central symbol, leaves me in the camp that, despite the different symbology, they are intended to be interpreted using the same rules we settle on for the top two.
The question is how we use them after that. If it's a multi-step puzzle then the first step is always the easiest, and the smallest.