Larry Fleinhardt, Ph.D., is a fictional character in the CBS crime drama Numb3rs, played by Peter MacNicol. He is the best friend and colleague of Charlie Eppes.
Dr. Lawrence Fleinhardt holds the Walter T. Merrick Chair of Theoretical Physics at the California Institute of Science, CalSci (a university based on Caltech and located in Los Angeles in the Numb3rs universe). He is portrayed as a brilliant theoretical physicist and cosmologist, who researches supersymmetry, string theory, 11-dimensional supergravity theory, doubly special relativity, black holes, Ly-alpha emitters, the cosmic microwave background, and gravitational waves, using LIGO to check predictions on quantum corrections. He may have even found a way to express Calabi–Yau manifolds in a way that goes beyond a nonvanishing harmonic spinor and, independent of Charlie, published a work of genius entitled Zero Point Energy and Quantum Cosmology, which could provide insight into the cosmological constant problem (episode 3x4, "The Mole").
Backstory Larry Fleinhardt has always been fascinated with the stars. He had his first telescope at age three, was the president of the rocket club in the fifth grade, and worked as a docent at his local planetarium while in junior high school. Once a remarkable student comparable to Charlie, Larry graduated from college at the early age of 19. However, Fleinhardt had an addiction with card counting during his years as an undergraduate, which he feels ashamed about and has compared his discomfort during field research at a casino as being at the event horizon of a black hole; this was discussed in "Double Down", an episode that focused on a gambling ring. He wanted to prove the power of mathematics. Dr. Fleinhardt has been teaching for 20 years and Eppes attended his classes at Princeton University, first taking his quantum physics class at the age of 13. Charlie's father, Alan Eppes, said that all the family heard about that first year was Professor Fleinhardt. Dr. Fleinhardt has worked on building a space telescope for DARPA in the past, but it was weaponized against his wishes as part of the star wars missile defense project.
The only thing he remembers of his mother is her warm smile and tweezed eyebrows. He rarely has spoken of his father, a painter who wished his son had seen the world the way he did and was disappointed by his son's path; Fleinhardt expressed his sorrow with a memory he does not gladly inhabit, stating it is a father's folly to impose his will on his son. Consequently, Larry has an exhaustive knowledge of art and attempted a career as a painter, but failed as he was required by his father to study the great works of the masters before he could create an original work.
Characterization Larry is quite awkward in social situations; his students have described him as "boring and intellectually inaccessible." Some of his irregular views have made Charlie wonder, "What flavor of crazy Kool-Aid do they make you drink before you join the physics department?" When Larry suggested a neural imbalance may be the cause of his lack of dreaming in "Hot Shot", Charlie thought the notion would explain a lot about his friend. Usually, Larry seems relaxed, but, at times, he can be a bit neurotic, or "Fleinhardt". An absent-minded professor, he has forgotten whether he was entering or leaving the CalSci library (and subsequently returned to the library despite insistent reminders that he was exiting at the time). The "Doc" even had his own Eureka moment in "All's Fair", wherein he applied fluid mechanics to the analysis of footprint slabs he submerged in a jacuzzi only to determine, from the relative displacement of water by each indentation, that the suspect to a murder had a short right leg — a discovery that discounted a particular individual from guilt — and ran to the streets dripping wet in a robe, screaming that it was Archimedes all over again, only to forget where he put his clothes the next minute. Larry is disorganized like Charlie and claims that there is symmetry to his chaos. On a similar note, his antics have led him to eat purely white food at times to maintain supersymmetry, a focus in his research. Apparently, as mentioned in "Backscatter", Fleinhardt is awful when it comes to geography — he called to ask if the string theory convention he was already at was in St. Louis or Cleveland, when it was actually in Minneapolis. A perpetual preoccupation with celestial phenomena often has him spouting cosmic metaphors. His character is not unlike that of former acquaintance Richard Feynman, who is noted for being both a genius and an eccentric.
Larry frequently wears casual patterned shirts and drove a 1944 Volvo until he acquired a black 1931 Ford Model A that he cherishes. Fleinhardt owned a personally restored 1877 Victorian home which he sold in "Bones of Contention". The character evinces a distaste for number theory and cell phones, but enjoys hiking. Also akin to Feynman, he percusses, but never for pleasure — he drums away problems. Both he and Charlie are members of the North American Sundial Society, and they have worked together on various contests for the physics department, including a paper airplane contest. Larry has a Zen rock garden and has constructed his own Heron's fountain. He likes to "contemplate the koi pond" in front of Charlie's home, with each fish named by Eppes.
Evolution over the series Larry constantly challenges Charlie to employ a broader point of view to his work with the FBI and often assists him with this work, as when his cosmic listening project helped him with his signal analysis. However, Professor Fleinhardt frequently expresses his wish that Eppes would continue with academia rather than consult with the FBI. Along with Alan, Fleinhardt provides words of wisdom to Charlie, reminding him that human behavior is unpredictable. He even comforts Don Eppes (Charlie's brother and FBI contact) about his love life with his perspective on quantum entanglement, yet Charlie has accused him of "mixing cosmic metaphors" after he inadvertently referred to his relationship with Amita Ramanujan as a black hole.
After the "untwinable" event of having "carnal" relations with Laurel Wilson ("Sabotage"), a philosophy professor with whom he regularly took hikes, Larry begins to wonder about his life choices, missed (romantic) opportunities, and the impact of children (or wormholes in Larry's view) on people's lives. Larry has additionally noted how demanding physics can be on his social life (that is nigh-nonexistent as a result of his work) and, along with Charlie, understands Einstein's feelings that one can either do physics or have a family, but not both. Meanwhile, he has realized his affections for Megan, and describes to his confused friends, the Eppes family, that they are closer to understanding the mystery of gamma-ray bursts than his feelings in this matter.Season 2, Episode 9, "Toxin" Thus, Larry begins a relationship with Agent Megan Reeves. When he finds out she is kidnapped in "Two Daughters", Larry's emotions overcome him. Megan claims to like him for his unpredictability. Larry shortly thereafter becomes distracted by his relationship with Megan, and desires more structure. Charlie has not seen such an emotional uncertainty with Larry as when he speaks of her and, as Larry has commented himself, his previously unstructured relationship with Megan made baryogenesis look neat. In "Long Shot" (episode 3x06) they create a schedule for dinner and a movie every other Friday, lunch on Wednesdays, and a monthly wild card that Megan can use at her discretion. Though, he has recently commented that his relationship with Megan has made him less concentrated on his work.
After selling his home, Fleinhardt has for some time since been living as somewhat of a vagabond, finding shelter in his office, his car, hotels and friends' places, and often sleeping on couches or in CalSci's steam tunnels. Larry claims he didn't want to inconvenience Charlie and thought that sharing one bathroom would be problematic, and further did not want to move in with Megan and ruin something "before it even began." He also claims to believe it allows him to focus on the sublime rather than the mundane, as well as gravity. Alan has commented on his state during one of their chess games, providing the same advice he has dispensed to all geniuses he knows: "Don't be an idiot." Contrarily, Megan finds his situation oddly attractive. However, he "rethought the pursuit of a purely intellectual endeavor." Wanting less complexity and more structure in his life, as well as time to be with Megan, Larry states that he has decided to buy a condo. However, life has never been simple for Larry, and Alan has said that simplicity may be impossible for him, so he must deal with structured complexity.