In a fight, to determine which weapon can produce the greatest deterrent effect in a short period of time, several factors need to be considered: 1. **Weapon type**: Different types of weapons (such as cold weapons, hot weapons, non-lethal weapons, etc.) have different effects on deterrence. For example, firearms usually have a stronger deterrent effect, while knives may be more threatening at close range. 2. **Appearance and design**: Whether the appearance of the weapon appears to be powerful and lethal, and can create psychological pressure in the opponent's mind. For example, highly offensive weapons (such as machetes and sticks) may be more deterrent than ordinary self-defense weapons. 3. **User proficiency**: The skills and experience of the weapon holder will also affect the deterrent effect. The confidence and ability shown by the user who is familiar with the weapon will enhance the deterrence of the opponent. 4. **Occasion and environment**: When choosing a weapon, environmental factors should be considered, such as the size of the space and the availability of surrounding objects. In a small space, short weapons may be more advantageous. 5. **Target importance**: The deterrent effect also depends on the psychological state of the target. If the opponent is afraid of a certain type of weapon, then that weapon may be more deterrent. 6. **Legal and moral constraints**: In some cases, the use of specific weapons may bring legal risks and moral disputes. Choosing weapons that can be used legally can avoid subsequent legal consequences. In actual situations, after evaluating these factors, choose appropriate weapons to achieve the greatest deterrent effect. However, in any case, avoiding violent conflicts and seeking peaceful solutions are always the most important.