New Typo Protection Feature?

[brenty]

I have high hopes for iteration!

"That looks like a typo." No! I'm actually trying to FAIL the review!

It would be so awesome if the solution to this actually ended up being an “I don’t know” button, with inputting の、しらん、しらない、わからん、わかんない、いや、だめ、むり etc. triggering the same – except in cases where the correct answer is in fact one of the above, of course.