In conflict, any form of violence is dangerous and illegal. It is the wisest thing to give priority to avoiding conflict, seeking safe evacuation or calling the police. However, if the deterrent effect must be evaluated (only from a theoretical point of view, actual use is not encouraged), the following factors may affect the deterrent effect of weapons： --- ### **1. Core elements of deterrence** -**Visibility and psychological impact**: Weapons need to be quickly perceived as threatening by the opponent (such as size, sound, and appearance). -**Instant effect**: Can produce strong sensory stimuli (such as strong light, loud noise, pain) in a short period of time. -**Legality**: The use of illegal weapons may have more serious legal consequences. --- ### **2. Deterrence analysis of common weapons** ####**(1)Non-lethal tools** -**Strong light flashlight**: Sudden strong light can cause short-term blindness, interfere with movement, and are legal and easy to carry. -**Anti-wolf spray (chili water)**: Instantly irritates the eyes and respiratory tract, causing severe pain and difficulty breathing, and has a significant deterrent effect. -**High decibel siren**: A sudden loud noise may interrupt the intent of the attack and attract the attention of the outside world. -**defibrillator (legal required)**: The sound of electric current and sparks have psychological deterrence, and the muscles can be temporarily paralyzed after contact. ####**(2)Physical weapons** -**Blunt instruments (such as sticks)**: Large in size and strong in deterrence when wielded, but need to be used at close range and can easily be counterattacked. -**Knives**: High-risk weapons that may inspire the opponent to resist more fiercely, and the legal consequences are serious. ####**(3) Environmental weapons** -**Handy items (chairs, stones)**: Strong temporary nature, but deterrence depends on the way of use and the opponent's psychology. --- ### **3. Key principles of weapon selection** -**Legality takes priority**: The use of illegal weapons may escalate the conflict and lead to legal penalties. -**No need for complex operations**: Deterrence needs to be completed in an instant, and weapons with complex operations may fail. -**Distance control**: Give priority to tools that can maintain a safe distance (such as spray>close-in weapons). -**Psychological cues**: The “unknown threat" of the weapon itself (such as the spark of a defibrillator) may be more effective than the actual damage. --- ### **4. Precautions** -**Deterrence is not equal to safety**: The other party may react more extreme due to fear or anger. -**Legal risks**: Even if it is in self-defense, excessive use of force may be judged to be excessive defense. -**Priority strategy**: Staying calm, verbal warnings, making noise for help, and fleeing quickly are still the best strategies. --- **Final recommendation**: Self-defense should focus on prevention and risk aversion, learn non-violent communication skills, improve environmental alertness, and carry legal self-defense tools (such as sirens or sprays) with you. In an emergency, it is always safer to get out of the dangerous environment quickly than to resist.