That sentence is a natural expression of admiration. Depending on the tone you’re after, here are a few alternatives:
- Natural: I have to admit, whoever came up with this trick is incredibly clever.
- Enthusiastic: I have to admit, the person who came up with this trick is a genius!
- More polished: I have to admit, whoever invented this trick must have a remarkably sharp mind.
- Casual: I have to admit, this is such a smart trick—I wish I’d known about it sooner.
- Less exaggerated: I have to admit, whoever thought of this came up with a really ingenious idea.
If you’re using it as a YouTube title or social media caption, “I have to admit, whoever came up with this trick is a genius!” is the most attention-grabbing while still sounding natural.
