Sometimes to make a mistake could teach us something useful for the future... ;)
If you say "to fall often is useful" it could mean that falling several times is useful. It should be "often, falling is useful" as in "at times falling helps".
Thanks, I understand now, though I still think the sentence is odd!
I find this so tricky how the English words "falling" and "to fall" are both translated to the infinitive!
This seems right to me!
If you are a leaf, maybe...
Why is 'to fall often is useful' marked wrong (strange sentence anyway!)
Because often here means that "Often, falling is useful" and not "Falling often is useful". :)
"Often it's useful to fall" is also correct. The word order is irrelevant. Reported.