When trying to convey a point of certainty or inevitability, the phrase "by that very fact" can be a powerful tool. However, there are many synonyms and alternative phrases that can be used to achieve a similar effect. Options include "therefore," "consequently," "necessarily," "as a result," "inevitably," "perforce," "by definition," and "unavoidably." Each of these phrases carries its own connotations, so it's important to choose the one that best fits the tone and context of the specific piece of writing. By developing a varied and nuanced vocabulary, writers can effectively communicate their ideas with precision and impact.