"Then you feed it to a probabilistic algorithm and so you can not have any idea what the output has to do with the input"
This is theoretically true, but to me at least, practically irrelevant. In all cases, for most values of the word "all", the summary does tell you what the article contains.
For me at least, the usefulness is not that the summary replaces reading the article. Instead, it's a signal telling me whether I should read it in the first place.
Comments
"Then you feed it to a probabilistic algorithm and so you can not have any idea what the output has to do with the input"
This is theoretically true, but to me at least, practically irrelevant. In all cases, for most values of the word "all", the summary does tell you what the article contains.
For me at least, the usefulness is not that the summary replaces reading the article. Instead, it's a signal telling me whether I should read it in the first place.