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If you flip a coin, the probability that it lands on heads is 50%.
So if you flip a coin 10 times, how many times would you expect it to land on heads?
We can use a simple formula to answer this:
Expected number of heads = (probability of landing on heads) * (number of flips)
In this case, expected number of heads = (0.5) * (10) = 5
If you actually flip a coin 10 times, though, it won’t always land on heads exactly five times. Sometimes it will only land on heads four times. Or six times. Or in rare cases, zero times.
The expected number of heads and the actual number of heads are not always equal, but we know that the actual number of heads will likely increase with more flips.
I like to think that there exists a similar formula for success in life:
Expected number of successes = (probability of success) * (number of attempts)
The “probability of success” is the sum of your skills, experience, and knowledge. The more you have, the higher your probability of success. And the “number of attempts” is purely how many times you try something.
When I applied for data scientist jobs last year, I only had one year of experience, mediocre skills, and not a ton of knowledge in the field. My probability of getting hired by any given company was maybe 10%. Fortunately, I decided to apply to 10 different companies. This meant my expected number of successes was:
Expected number of successes = (0.1) * (10) = 1
And I did get an offer from exactly one company, which I accepted.
I’m using these numbers and equations to make a simple point: to succeed in any area, you need to build up your probability of success and you need to commit to making several attempts at something.
Someone who has an incredible set of skills, experience, and knowledge won’t find success if they never make any attempts. Likewise, someone who completely lacks skills won’t find success purely through making dozens of attempts.
The trick is to combine the two. Increase both your skills and your number of attempts to increase your expected number of successes.
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