Which people are most qualified to program and work with codes? Math people or language people? From the very moment that the first computers burst on the scene, it was assumed that the ideal profile was that of an individual with a mathematical mind. However, a recently published study forces us to question this stereotype. Here we put it to the test, in practice, with these two cryptograms.

## Brainteaser 1: Alphanumeric Mathematical Puzzle

An alphanumeric puzzle is a mathematical operation between words so that to solve it you have to identify which digit is hidden under each letter. Each letter represents a single number, and always the same; whatâs more, the first letter of each word can never represent 0. Knowing this, try and solve the following sum of mathematicians:

GALOIS

+ PASCAL

ââââââ-

LAPLACE

## Solution 1

For centuries, the best coders and cryptanalysts were considered to be linguists and scholars of related disciplines. However, the invention of the Enigma cipher machine in the first half of the 20th century, its use by German troops during the Second World War to encrypt their communications and the urgent need to decipher these messages as the war progressed, forced a change in this perception.

The Enigma was an electromechanical cipher machine whose foundation was eminently mathematical. With a core made up of a set of disks that rotated at different speeds and an internal wiring that interchanged a series of positions, its strength and invulnerability resided in the uncountable number of possible combinations that the core allowed.

It was the team of Polish mathematicians led by Marian Rejewski, first âand later the British cryptanalysts commanded by Alan Turingâ who managed to crack the fearsome Nazi cipher machine. Not only that, but they achieved it thanks to the invention of deciphering machines also built on mathematical principles, the so-called Turing *bombes*, which were followed by the imposing *Colossus*, considered the first electromechanical computer.

Thus, the emergence of computers and their constant evolution marked the beginning of a new era in coding and decoding, the transition between classic cryptography and its modern version. Given that computers operate with binary numbers and that, in fact, the first computer programs were developed by mathematicians, it was assumed from the beginning that the best programmers were those with a mathematical mind (and training), rather than linguists and other experts in the structure of language.

However, it may be time to revisit this idea. At least thatâs whatâs suggested by a recent study by researchers at the University of Washington that has concluded that when it comes to programming and writing code, it is better to have language skills than mathematical talent. Or, put another way, people who are good with words and languages have an easier time programming (and learning to do so) than those who excel at numbers.

The explanation outlined by the authors of the research is that writing code involves learning and handling another language, so the ability to learn new vocabulary and grammar and combine them to express ideas and intentions as clearly as possible is paramount. But is it the same when it comes to deciphering unknown codes and decoding encrypted messages? In principle it should be so, since it is a matter of knowing how to interpret a set of symbols and the rules they follow to express an idea.

In fact, Alan Turing himself already anticipated this. When, after the invention of his *bombes*, the British Government Code and Cypher School launched a recruitment campaign to bring in new members, it did so by issuing an anonymous challenge to *Daily Telegraph* readers to solve a crossword puzzle. And the 25 readers who answered were invited to the Department’s premises to pass a new test which, again, consisted of a crossword puzzle. The reason for this was that it was understood that people who excelled at playing with words could also be good puzzle solvers and complement the mathematicians, physicists and engineers on Turing’s team.

## Brainteaser 2

Below is a coded message that the reader has to solve, bearing in mind that the code has been typed not by a âdigit personâ but by “letter person,” who makes a living typing them:

(1,2) (3,2), (1,2) (9,2), (9,1), (4,3), (3,1), (9,2), (1,2), (3,3), (3,1)

## Solution 2

### Miguel Barral

### @migbarral

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