system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Question regarding Eternals and implications raised from it.

I recently watched Eternals and mostly enjoyed it but the after credits scene has left me pondering some thoughts.

If Eros is an Eternal and the brother of Thanos, this would mean he too is an Eternal (with a deviant mutation)
Would that mean Thanos can be resurrected/rebuilt via the World Forge? And possibly has his memories stored there too? 

Also, I understand that Eternals are essentially hyper-advanced androids imbued with Celestial energy and created by the Celestial Arishem however why did he make Makkari deaf and mute? 
Could Ajak not have healed her?
gpt
There's a fan theory I've seen that Makkari is deaf because being able to hear is useless or even counterproductive when moving at supersonic speeds.  If Makkari was deaf from the beginning, there would be no injury to heal.