I found this sentence in a grammar book:
A number of people have tried to find the treasure, but they have all failed.
Can Simple Past be used in the second clause?
A number of people have tried to find the treasure, but they all failed.
If it's possible, then what's the difference between these two sentences?
I'm asking because I the verb "fail" is confusing. If you fail, then you fail and that's it! I see it as a complete action. The first sentence gives me a feeling that many people will keep finding this treasure and will continue to fail.