fearful symmetry be a pleasant episode with a few fault . the first thing about the episode be that it take place near mountain home air force base in southwest idaho . season one deep throat take place near ellens air base and also in southwest idaho . i be wonder if the air force base be one and the same but they decide to use the real name in fearful symmetry . mulder and scully have some good dialog and always a plus . ed meecham and the zoo keeper and remind me of cranky and old school teacher . they must have like child at one time and you just can not imagine how . just like he must have care more for animal at one point . i like the concept of the episode and but i felt it have some inconsistency . if alien be so adept at abduct human and return them safely and why can not they put the animal back in the right place . and the alien be just now have problem return the animal . i do not buy mulder theory of a problem with the space time continuum . a if he an expert on that . i also think jayne atkinson performance a willa ambrose be not well do . besides those nitpicks and i still enjoy this episode because of the intriguing concept of alien harvest animal dna as well a human dna .