How effective is the withdrawing technique aka Pulling out if you didn't use protection at all(no condoms,birth control,or morning after?)

Anodic Protection is an electrochemical technique used to prevent corrosion on metals which exhibit a passive behavior in highly acidic or alkaline environments. Anodic Protection is commonly found on Sulfuric Acid tanks and Kaymr Digesters.

Intrinsic safety is a protection technique for safe operation of electrical equipment in hazardous areas (e.g. explosive materials, flammable materials).

Manual guidance is a coaching technique used in many sports, although coaches tend to steer-clear of this technique nowadays due to child protection and and a series of allogations by young children. Manual guidance is used to show performers a certain skill, by moving the performer into the position required to complete the action. Manual guidance is a coaching technique used in many sports, although coaches tend to steer-clear of this technique nowadays due to child protection and and a series of allogations by young children. Manual guidance is used to show performers a certain skill, by moving the performer into the position required to complete the action.

it is a crafting technique