What connects you
A problem in common, not a keyword in common.
Every member's record says which problems they have actually solved, and who watched them do it. An introduction is made on the problem, not on a job title.
A directory makes you guess
Search any network and you are picking people by job title and employer, because that is all you can see. You guess who might be useful, then guess again whether they will reply.
Cream connects on what people have done
Your record says where you are heading. Theirs says, in plain words, what they have already delivered, and who confirmed it. The introduction is made between those two facts, and it arrives with its reason attached.
The offer comes first, then the introduction
We don't find someone who needs help and then go looking for a willing expert. Nobody is introduced to anybody until both people have said yes, and either of you can decline without the other being told why.
Which is why an introduction is worth taking
An introduction only reaches you when the person on the other side has already agreed to be there, about the specific thing they have already done. That is the difference between a network and an inbox.
You are never the answer to a question you didn't agree to be asked.