The utility of this strategy resides mostly in the fact that it can be used in most situation, but also that it is highly likely to be successful regardless of who is using it.
Is the construction grammatical? Or should I use 'not only' instead of 'mostly'?
Yes, you can say this. The utility of this strategy resides not only mostly in the fact that it can be used in most situation s , but also in the fact that it is highly likely to be successful regardless of who is using it. Both sentences seem unnecessarily lengthy.
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Yes, you can say this.
The utility of this strategy resides not only mostly in the fact that it can be used in most situations, but also in the fact that it is highly likely to be successful regardless of who is using it.
Both sentences seem unnecessarily lengthy. I'd consider saying it like this.
This strategy is useful not on