Polish - the hardest language in the world.

[Rethel]

Finnish has 51 declension types and 27 conjugation classes

But this is aglutinative language - something totaly different.
Actually it even shouldn't be called by fusional terminology.

Also Finnish has 15 cases. Out of 261 languages classified for the number of cases at WALS, only 24 have 10 or more cases

As above. But when aglutinative languages started to being researched they haven't nothing better, so used this what they knew - latin fusional based terminology.

And the map is obviously wrong, as african languages do not have cases, but classes.
The author of the map seems to take every non-chinese-like language like a fusional-like-one

[Östsvensk]

Henrik Samuel, or H.S, Nyberg (1889-1974) could write, read and speak on a native level, apart from his mother tongue Swedish, German, English, French and Egyptian Arabic. He could write, read and speak Spanish, Italian, Russian, Polish, Lithuanian and Finnish. He could write and read flawlessly Latin, Greek, Hebrew and Classical Arabic, and could write and read Aramaic, Syriac and Ethiopian; Modern Persian, Middle Persian, Mandaic, Armenian, Georgian, Sanskrit and Turkish. He could also comprehend Kurdish, Balochi, Urdu and Bengali. In total, he knew 28 languages.

[Zhulta]

i think one of the hardest languages to learn would probably native american languages with their insane polysynthetic structure
Is Polish that different or more complex compared to other slavic languages or why would it be considered difficult? Kinda like what german is to english?

[Lucas]

i think one of the hardest languages to learn would probably native american languages with their insane polysynthetic structure
Is Polish that different or more complex compared to other slavic languages or why would it be considered difficult? Kinda like what german is to english?

because of

[Roy]

i think one of the hardest languages to learn would probably native american languages with their insane polysynthetic structure
Is Polish that different or more complex compared to other slavic languages or why would it be considered difficult? Kinda like what german is to english?

Yup. Navajo seems like a hell to learn! But it's very different and intriguingly bizarre too! It does not use adjectives for instance. Polish is complex and irregular but I am not sure whether much tougher than Czech or Slovene is.