system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Are aerodynamics really that important when it comes to brooms?

First, from the GBA game " Harry Potter: Quidditch World Cup":

&#x200B;

 "*The state-of-the-art racing broom. The Firebolt has unsurpassable balance and pinpoint precision. Aerodynamic perfection.*" —1994 Quidditch World Cup 

&#x200B;

So my question is; how important can broom aerodynamics be when you've got a wizard riding on the back of it? Some times, they're even wearing robes that are far from aerodynamic.  

&#x200B;

The only way I can see a Firebolt being more aerodynamic than something like a Shooting Star or Nimbus, is that there may be some form of shield spell cast on it, so that when you're riding it; air will flow around you differently..  

&#x200B;

but if that was the case, why would their robes and hair blow in the wind when you were flying around on it?
gpt
Wizards are, as a general rule, dumber than a box full of particularly uneducated rocks. There's a good chance that they don't even know what "aerodynamic" means, other than "does up-going goodly".

Regarding the shield spell, though: Hagrid wears eye goggles when riding his flying motorcycle, but the wizards don't wear such protection when they're on their brooms. That could just be a style choice by Hagrid, but it's also very possible that there *is* some magic to protect the broom-borne wizard from the ill effects of flying: wind, cold, lack of oxygen, etc.

Also, magic tends to work, at least in part, based on intention and belief. You can't cast *AK* unless you really want someone to die, and maybe you can fly a broom better if you think it's "aerodynamic perfection". The Firebolt might just be a really expensive placebo.