# The Application of Probability Techniques to the Selection of an Optimum Girlfriend SG Pickering Department of Mechanical Engineering University of Bath.

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The Application of Probability Techniques to the Selection of an Optimum Girlfriend SG Pickering Department of Mechanical Engineering University of Bath

Contents Motivation Theoretical Basis Results of Preliminary Investigations Further work

Motivation PhD research with a useful application The Could I do better? mindset –Are you fulfilling your potential –Applicable to both male and female relationships The complex mathematical reasoning will confuse your girlfriend and hopefully stop her from crying when you tell her that you know you can do better

The Law 1.Try 1/e ( 37%) of those Young Ladies whom you can pull (To assess the general quality of the population). 2.Calculate a ranking for each of these girls. 3.Try the remaining c.63% one by one. 4.Stop as soon as you rank the current young lady higher than any of those tested in Part 1. 5.She is probably the best girlfriend (in your world). Dont tell her that she was chosen by a mathematical formula.

Theoretical Basis

Filling the Gaps How many girls could you realistically pull? How do you rate the girls whom you pull?

Population Space Assuming 2 visits/week to a night club Pull probability 33% (adjust as required) Maximum # of pulls / year –1 night relationship (cursory examination) 29 girls/year –4 week relationship (basic info) 11 girls/year –12 week relationship (advanced info) 4 girls/year

Rating Your Girlfriend: Subjective Metrics Attractiveness –Face, breasts, legs, arse, hair colour, height, nationality, camel, body shape Skills –Cooking, cleaning, talking, BJ, sexual abilities & adventurousness Miscellaneous –Quality of her friends, her reputation

Subjective Rating Scale Rating IndexProblems noted byDescription 1 - AwfulAny boyfriend Not acceptable 2 Average boyfriend 3 4 Borderline 5 - Mediocre Critical boyfriend 6 Acceptable 7 8 9Trained observer 10 - ExcellentNot perceptible

Rating Your Girlfriend: Objective Metrics Intelligence Wealth Shopping or preferably lack thereof (except at Christmas/Birthday time) Ironing ability Does she approve of your friends?

Preliminary Investigations A study was carried out by the author with the Help of Mr. Ball During the past 2 weeks Population size of 150 girls

Subject A The Good

And The Ugly

Current Work Obtaining more test data Trying to not obtain bad data …

Further Work Comparison of The Law with a normal (random) approach Application of technique:

Contact Details Simon Pickering MEng Dept. of Mechanical Engineering University of Bath Bath, BA2 7AY 01225 383314 S.G.Pickering@bath.ac.uk

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