[fake-name]

Considering they also mention SQL and Forth, I think this could probably equally be called "things that confuse someone who only knows C".

[andybak]

I think both Forth and SQL are outliers in their strangeness. Most people only have to deal with SQL on a very shallow level and barely regard it as programming at all.

Forth is known by name and reputation but very few people have ever tried to write anything in it - let alone delve into it's strange bootstrapped nature.

[DonHopkins]

FORTH ?KNOW IF HONK ELSE FORTH LEARN THEN

[combatentropy]

  > Most people only [...] deal with SQL on a very shallow level and
  > barely regard it as programming at all.

Fixed that for you.

And now the sentence states why there are so many problems in the world (of software).

;)