Podcast Episode Summary:

Podcast: Más de uno
Host: Carlos Alsina (Onda Cero)
Episode: El injusto sorteo por apellidos para elegir colegios
Date: March 12, 2026

Overview

In this episode, Carlos Alsina and collaborators tackle the controversy surrounding the use of surname-based lotteries for school admissions in Spain. The conversation, peppered with the show's characteristic humor and wit, critically examines fairness in selection processes, highlights regional differences, and proposes simple numeric alternatives. The episode also includes their traditional mathematical challenge, drawing playful engagement from listeners.

Key Discussion Points & Insights

1. Resolving the Weekly Mathematical Challenge

[00:03–01:07]

• Santi presents the solution to last week’s math riddle, a seemingly magical trick that’s revealed to be basic arithmetic:
  • Think of a number, multiply by 2, add 6, divide by 2, subtract the original number—result is always 3.
  • Caller explains: “Al multiplicar por 2 el número que has pensado y luego volverle a dividir entre dos, anulas cualquier número que hayas pensado... siempre te queda 3.” (Caller, 00:43)
• Memorable moment: Light jokes about giving away the book "Mi vida matemática mientras haces KK", the program's in-house humorous math book.

Quote:

“No es un truco, es una técnica matemática, evidentemente.” (Santi, 00:15)

2. The Surname Lottery for School Admissions: Justice or Injustice?

[01:07–03:35]

• Santi, clearly frustrated, brings up the current debate:
  • He’s personally involved as his daughter is about to enter school.
• Explanation of the process:
  • Parents list preferred schools; when applicants tie in points (distance, siblings, etc.), a lottery decides admission order.
  • In many regions, this lottery is based on surname initials.
• Criticism of the system:
  • Surnames aren’t distributed evenly; common surnames (e.g., García, Gómez) mean some families have far greater odds of being disadvantaged.
  • Santi: “Por apellidos siempre está mal. Los apellidos no son equitativos. No están igualmente repartidos.” (Santi, 01:50)
• Engagement and relatability:
  • The team humorously compares their own surnames:
    • “Alsina, yo contigo no sé si entrar, porque tú estás ahí, ocupas poco ratio.” (Santi, 02:36)
    • Alsina: “Bueno, pues somos una minoría, pero una minoría muy cualificada de primer apellido.” (Host, 02:42)
    • “Hay 3.700, Alsina. Me parecen tantos que los tendrás en un grupo de WhatsApp.” (Santi, 02:47)
• Metaphor for unfairness:
  • Santi equates the system with queuing at a restaurant: if a large group’s surname comes up, it fills all the seats, leaving individuals or smaller groups behind.

Quote:

“Es como ir a un restaurante a esperar tu turno y que sorteen entre la gente que hay esperando. Cuando hay grupos de 200 y grupos de 10...” (Santi, 02:55)

3. Regional Differences and a Proposal for Reform

[03:08–03:35]

• Some autonomous communities (e.g., Cataluña, País Vasco) have shifted to a number-based random system—more equitable, according to Santi.
• Other regions (Murcia, Madrid, Valencia) still use the surname model.
• Santi’s proposal:
  • “Yo propongo hacerlo por números. Que se sortee un número, ya está.” (Santi, 03:28)

Quote:

“Tu hijo tiene un número... Y que le toque es equitativo.” (Co-host/Santi, 03:35)

4. New Mathematical Challenge

[03:36–04:32]

• Santi poses a new challenge for the listeners:
  • 20 people must be divided into groups of 6, 3, and 2, with only five groups used in total and no one left out.
  • Listeners are encouraged to solve and send answers for a prize.

Quote:

“Tenemos veinte personas y tenemos que dividirlas en grupos de seis, tres y dos personas... ¿Cómo podemos hacerlo usando solamente cinco grupos?” (Santi, 03:36)

Notable Quotes & Memorable Moments

• “No es un truco, es una técnica matemática, evidentemente.” (Santi, 00:15)
• “Por apellidos siempre está mal. Los apellidos no son equitativos. No están igualmente repartidos.” (Santi, 01:50)
• “Bueno, pues somos una minoría, pero una minoría muy cualificada de primer apellido.” (Alsina, 02:42)
• “Es como ir a un restaurante a esperar tu turno y que sorteen entre la gente que hay esperando...” (Santi, 02:55)
• “Yo propongo hacerlo por números. Que se sortee un número, ya está.” (Santi, 03:28)

Timestamps for Important Segments

• 00:03 – Math trick explained and resolved
• 01:07 – Introduction to school lottery by surnames
• 01:50 – Critique of fairness in surname-based lotteries
• 02:36 – Anecdotes on surname frequency (Alsina, García, Gómez)
• 03:08 – Regional comparisons and system reform suggestions
• 03:36 – New mathematical challenge posed

Tone & Style

The tone is lively, light-hearted, and slightly irreverent, blending relatable frustrations with humor and audience participation. Santi’s playful complaints and the banter among hosts make serious topics engaging and approachable.

Conclusion

This episode blends topical debate on educational fairness with the show’s signature mathematical games, ultimately proposing that a move to number-based lotteries would improve equity in school admissions. The hosts’ witty exchanges and accessible explanations both inform and entertain, making policy talk feel personal and fun.