I'd estimate that only half of the languages presented were of the sort that differ only in minor aspects. Several of the languages presented were _far_ outside

I'd estimate that only half of the languages presented were of the sort that differ only in minor aspects. Several of the languages presented were _far_ outside the mainstream, particularly the two visual languages which were surprisingly practical. On the whole I'd say factor was likely the most unconventional language besides those mentioned above. The breadth of libraries they have built while being so iconoclast is impressive.