Hearing Ukrainian for the first time, if you're Russian, sounds like you're hearing a Russian dialect you never heard before but understand 90% of, bar some words you've never heard. The languages are that close.
Polish, otoh, would baffle a Russian at first, you'd grasp quite a bit but you know you're hearing a foreign language, Slavic but foreign.
Nifty diagrams, but they should be taken with a huge grain of salt of course.
For example it shows EN/DE and EN/NO as having equivalent distances (49) when obviously EN/DE are much closer than either is to NO (in any holistic comparison of the three languages). It also shows IT/FR as being significantly closer (31) than IT/SP (40) when that's also plainly not the case -- again if we consider the distance between respective language pairs holistically (which includes a whole lot of other factors like phonemic footprint, meter, etc).
In short this reads like pretty much the kind of post one would expect from a "brain candy" site like this.
Less harshly (assuming good indent on the author's part), it demonstrates the pitfalls of relying on a single score (which in itself can be subject to all kinds of weighting and sampling biases) simply because it's a "score" and we're all supposed to be "data-driven" in our analyses these days.
But again -- nifty diagrams, and they do at least give a feel for the topic of mutual intelligibility and language distance (even if the scores themselves don't seem to be particularly meaningful).
As a Pole I have a similar reaction to Czech and Slovak. Except it feels less like a strange accent (because we don’t have these as much) and more like baby talk. We get the words, just how they’re used feels unusual, and often funny.
From the other side, my Czech friends told me that Polish sounded to them like something from deep antiquity. Like reading an ancient manuscript where again you get the words but no sane person these days would use them like this.
Yup - Polish is in a different family (Western Slavic), with lots of unknown words and a different phoneme density that immediately lights up as "foreign".
Hearing Ukrainian for the first time, if you're Russian, sounds like you're hearing a Russian dialect you never heard before but understand 90% of, bar some words you've never heard. The languages are that close.
Polish, otoh, would baffle a Russian at first, you'd grasp quite a bit but you know you're hearing a foreign language, Slavic but foreign.