"To understand" vs "To understanding"

[Steven D]

Do you mean, "to understanding" isn't an infinitive? If so, I agree. It's not an infinitive.

Of course, that's true. However, that's not the point I was making. I would read my post again.

[Steven D]

Quote:
Originally Posted by X Mode
There is a choice between an infinitive and a gerund here.

In other words, the subject of the infinitive phrase "to understand" would be something like "for us"?

EX: ?"Identifying the composition of this system is thus critical [for us] to understand the mechanisms that stabilize..."

Sounds awkward, no?

Yes, it sounds awkward. Given a choice between an infinitive and a gerund here, the gerund is better. This, as I see it, has to to do with both form and meaning.