Honestly both options look confusing to me. Reminds me a little bit of the PlayStation logo, but less clearly: see here,
(Rather than scientific, I do think it comes off a bit like a gaming company logo.)
As people have commented, the logo doesn’t make it clear what kind of work we are doing. Without an accompanying text, people might not even realize it’s a logo, as opposed to some blob.
Those two are slightly better, because they look like comic book text bubbles, symbolizing conversation, but again, there’s only one of them, so the idea of a two-way exchange is not conveyed. (I think I like D the best, or rather, I dislike it the least.)
I still don’t get a feeling of optimism or positivity at all. The logo is visually compact, but it’s too compact for me. It is basically an optical illusion (the P and S), and that makes it hard to comprehend. You’re left figuring out what it is. For example, C looks like a maze.
Personally, I would favor going away from this optical illusion design and start anew. But that’s just me.
Is the logo not going to be accompanied with any text?
Looking back at the thread that you made, almost all of them have some text of some sort that makes it clear that it’s a logo, as opposed to a cryptic symbol.