lo vs el in the last section

Question

In the last section of the translation, "between the practical, incredulity and mysticism" is translated as "entre lo práctico, la incredulidad y el misticismo." I don't understand why the práctico gets lo as it's article (other than because the hint said so). Can you explain, please. Thanks

Marsha Cornelius · Answer

Incredulidad and misticismo are nouns and so you can directly apply the definite article to them. However práctico is an adjective so I think we use lo + adjective to turn it into an abstract noun.

Inma Sánchez · Answer

Hola George
We use it, as Marsha said, with adjectives. It is as if we were saying "between things that are practical [or practicality] incredulity and mysticism".
Here is a lesson with examples of "lo + adjectives". Have a look.
Saludos
Inma