The issue of automatic jutsu.

[Maunten]

It is possible for various techs and jutsu to be activate as a result of an environmental conditions irrespective of the users conscious conditions.

Examples include

Amaterasu activation

Crow with shisui eye summon

Gaara's sand protection

Possibly some beast cloak techs.


The first two however are more of an issue, can we predict which jutsu can be set to activate after certain periods of time and in certain environments and how will these change vs debates?

 

[TheItachiUchiha]

They are aware of their surrounding especially because it's their specialty, (ex . Suigetsu in water or Gaara in the dessert).