were there any critics?
Robert Shearman and Lars Pearson, in their book, rated the episode four stars out of five, and called the script "very witty".
Improbable (The X-Files)
Robert Shearman and Lars Pearson, in their book "Wanting to Believe: A Critical Guide to The X-Files, Millennium & The Lone Gunmen", rated the episode four stars out of five, and called the script "very witty". 
what is improbable from the x-files? It is the thirteenth episode of the ninth season of the series "The X-Files". what is the plot? In this episode, Reyes and her fellow agents investigate a serial killer who uses numerology to choose his victims. Soon, Reyes and Scully meet an unusual man who may prove more of a hindrance than a help. who is part of the cast? Robert Patrick, Annabeth Gish and Gillian Anderson. who composed the music? Mark Snow. what ratings has it received? 5.1 do you know who has given the ratings? Nielsen Media Research what kind of reviews has it gotten? Jessica Morgan of Television Without Pity awarded the episode a "B+".
wiki:11208908
Improbable (The X-Files) [SEP] Reviews
"Improbable" received mostly positive reviews from critics. Jessica Morgan of Television Without Pity awarded the episode a "B+". Robert Shearman and Lars Pearson, in their book "Wanting to Believe: A Critical Guide to The X-Files, Millennium & The Lone Gunmen", rated the episode four stars out of five, and called the script "very witty". The two wrote that "the brilliance of Chris Carter's direction" allowed the viewer of the episode to see it "from God's point of view". Shearman and Pearson concluded that the episode "is not as smart as it thinks it is. But it's still pretty smart." M.A.