Raymond overestimates himself and underestimates his aunt's mental acuity. In discrete terms, the number of overestimates minus underestimates will have a binomial distribution. The three-element model overestimates the compliance and underestimates the characteristic impedance of the circulation. Hohmann severely overestimates delta-v, and produces highly inaccurate prescriptions for burn timings. However, it greatly overestimates the electronic heat capacities of metals. This overestimates the blocking probability, particularly for small "r". Additionally, the survey probably overestimates the typical cost because of a biased sample population. For the low density case, the T-time approximation also overestimates the strength of the tails. Extreme root flare produces noticeable overestimates of volume. Leahy has argued that TNS overestimates the size of his company's market share. According to Cunnane, this error overestimates linoleic acid requirements by 5 to 15 times. These figures from 1906 have been criticized as overestimates. Like the famous overestimates of the atmospheric density of Mars, this proved incorrect.