Acceptable Uses:
* Expressing possibility or ability: "The method *can* be adapted for use with larger datasets." This is perfectly fine and often necessary.
* Describing capabilities of a system or technology: "The software *can* process images in real-time." Again, this is a common and acceptable usage.
* Referring to potential future work: "Future research *can* investigate the impact of..." This is appropriate for a discussion of limitations and future directions.
Unacceptable Uses:
* Informal or colloquial language: Avoid using "can" in ways that sound conversational or lack precision. For example, "The results *can* be pretty good" is too vague and informal.
* Overuse: Using "can" repeatedly weakens your writing. Strive for more precise and varied vocabulary.
* Ambiguity: If "can" leads to ambiguity about whether something is possible or probable, rephrase for clarity.
Alternatives:
Consider using more formal and precise alternatives to "can," depending on the context:
* Is able to: More formal than "can."
* Is capable of: Emphasizes the ability.
* May: Suggests possibility or permission.
* Could: Suggests a possibility or hypothetical scenario.
* Might: Suggests a weaker possibility than "may" or "could."
* Has the potential to: Emphasizes the possibility of future development.
In short, carefully consider the context in which you use "can." If it maintains formality, precision, and avoids ambiguity, it's perfectly acceptable. If not, choose a more suitable alternative. Your thesis advisor or committee will likely provide guidance on your word choice.