[Dr. Sivana]

It is hard to take this article seriously.

Two rules were violated with the very first character in the title.

First, counting numbers up to and including ten should be spelled out.

Second, numbers at the beginning of a sentence should be spelled out.

The first character of the title is “6”, violating two rules at once.

[piytar]

LOL. Great catch!

[Hawthorn]

First, counting numbers up to and including ten should be spelled out.

Second, numbers at the beginning of a sentence should be spelled out.

Maybe. But IMHO you're referring to STYLE, as opposed to grammar per se.