Yeah, it's very obvious LR and JFM are two different people. People who thinks they're both the same person needs to watch Forensic Files at Netflix, there's this field called forensic linguistic who analyzes the way different people uses language.

However, LR is probably also a lawyer in his previous life with, perhaps some investment banking background given his astute readings of those SEC filings. His posts tends to be very precise in words (lawyers are very careful with words). JFM's posts on the other hand tends to start with few punctuation marks and habitually add punctuation marks here and there in the middle of sentences (go look at his posts history). LR doesn't do that.

PP and SS are also two different people. PP's posts are again very technical and also potentially have a background in biotech industry. Again, guys, please go watch Forensic Files, very nice show.

PS: Hi LR, are you reading this? Is my guess correct? Hehehe.