In theory

Pro Tip 1/3

Practical Limits

Shows a gap between how things could work ideally and real-world challenges or limitations.

In theory, anyone can become president, but in reality, it's a lot more complicated.

Pro Tip 2/3

Expectation vs. Reality

Used to express what is expected to happen versus what actually happens.

In theory, this coupon should save you money, but it might be expired.

Pro Tip 3/3

Skepticism

Can subtly suggest doubt about whether something will happen or work.

In theory, the plan is sound, but I'm skeptical about its success.