Intuitive Aptitude

Intuitive Aptitude is the ability to instinctively understand how things work.

Uses
Sylar describes Intuitive Aptitude as the ability to understand how things work, and how to fix them if they are broken in Once Upon a Time in Texas.

Peter needed a future Gabriel Gray to explain how to access Intuitive Aptitude. Gabriel gave Peter his broken watch to repair; performing the repair allowed Peter to access the ability.

Once active, Intutive Aptitude seems to be constantly active, unconsciously causing the user to analyze any system that they encounter. Users can also detect and identify flaws in the mechanism with only a cursory inspection.

Intutive Aptitude seems to work for analyzing mechanical and biological systems. Whether it would work on other types of systems (such as electronic hardware or computer software) is not yet known.

According to Sylar in Fallout, Intutive Aptitude allows the user to rapidly analyze human behavior.

Users are able to understand the abilities of other evolved humans after observing them being used; while being attacked by Knox, Gabriel immediately deduces how Knox's ability works.

Users are able to study evolved humans to analyze their abilities and copy them, gaining use of their abilities. They can also use Intuitive Aptitude to learn to use them much quicker than without.

Users can detect medical conditions, such as Sylar detecting Charlie's aneurysm and Hiro's brain tumor.

Weaknesses
As shown in Dying of the Light, Intuitive Aptitude can be stolen with Ability Absorption.

Intuitive Aptitude becomes inactive during an eclipse.

The Hunger
 Intuitive Aptitude causes a hunger  (i.e., an obsession to understand as much as possible)  that is hard to control. This hunger causes Sylar and Samson Gray to go on killing sprees to gain more abilities while Peter became much more aggressive in his ways of gaining imformation.

Peter was cured of the hunger when Intuitive Aptitude was absorbed from him in Dying of the Light.

 Samson eventually gave up killing and seemed to suppress the hunger, but when he saw Sylar's regeneration at work, it caused the hunger to return in Shades of Gray.

Notable Users

 * Sylar
 * ​Sylar (Explosion Future)
 * Gabriel Gray (Exposed Timeline)
 * Peter Petrelli (absorbed, lost)
 * Arthur Petrelli (possibly, absorbed, deceased)