What is the main basis for detecting theft cases?

The reality is that the crime of theft is low in cost and difficult to trace. Stealing, being seen to continue committing crimes is called robbery. Since it is stealing, people often can't find it. A very simple truth is that your bike was stolen, and the cost of this crime is very low. Open the lock and leave. The whole crime scene often leaves nothing behind. Unlike in movies, the police can solve crimes by looking at the environment and tasting the soil. Nothing will be left at the scene, how to solve the case? The next step is to sell stolen goods. As the saying goes, "It's dirty to catch a thief." The reality is that thieves will sell stolen goods quickly after they succeed. Your bike often stays in the hands of thieves for less than 24 hours. Then the thief will temporarily stop committing crimes and even move to other cities. It takes no more than 24 hours from theft to selling stolen goods, and there is no criminal evidence. Even if the police have a heart, there is nothing they can do. And this kind of case is the most complicated. From your point of view, you lost a bike. However, a grass-roots policeman may have 20-30 bicycle thefts. You concentrate on finding a bike. The police must spend 30 times as much effort, and over time. No matter how hot the blood is, it will get cold, because it can't be found, and there are more. Finally, you can only register for the record. If a policeman really tries his best to find a stolen bike, he doesn't have to do anything else. But in fact, it won't give the police time to find it. Because there are disputes between neighbors, drunkenness and trouble, husband and wife fighting, fighting, the court jointly enforced the law to arrest Lao Lai. Wait, wait, wait. It is right to serve the people, but the police are human beings, not machines, and there must be an upper limit. If the police are importuned and evade their responsibilities, their mentality will explode directly. Some people will say that this is unbearable? Seriously, anyone who meets 1 or 20 can't stand it. There is a joke inside the police. A young policeman who is passionate about something is often a new policeman. Often a young policeman who has worked for 2-3 years, he often curses when he is in a hurry. Those who are not anxious or angry are old-timers. The lack of police force in China is nothing new. If you want to expand the police force, you can only spend money. However, the salaries of ordinary police officers are paid by provincial and municipal public security departments, which are linked to the financial situation of local provinces and cities. There are many policemen in rich provinces, but there are also many cases. What if the general provinces can't get the money? Then we can only call the police less. Therefore, most policemen work in a high-pressure environment. How much energy do you expect the police to have to check bicycles in this environment?

Back to theft, will the thief be caught? Of course, because thieves are mostly recidivists. Often walk by the river, where can I get my shoes wet? It is certain to catch a thief, but it is still the same sentence "evidence is needed, dirt is needed". If the thief is caught, it can only be characterized according to the case at the time of being caught, or there is definite evidence, such as fingerprints and other monitored cases. But without direct evidence, the thief will never talk more about the case. A thief was arrested for a case. But how many cases did he have without evidence? That really only he and God know. This is still a personal act, not an organized gang. It is not uncommon to have hundreds of such petty thefts. Most importantly, even if this kind of car is caught in the future, there will be no compensation. Who steals a car when they have a real job? How to compensate without stable income? Car thieves really have no money. If you catch it, you can't afford it. The classic dialogue is "I have no money anyway, really no money".

But in fact, I think most people have found the wrong responsible party and stop loss direction. It stands to reason that if you lose your bike, you must first look at where you lost it. If it is in the community, then the first responsible person should be the property. But most people don't look for property. Why? Because the property has the courage not to give a shit about you. But not the police. The property can only sulk, not the police. Looking for the police seems to be an economical way to vent a little. We also lost our bike in our community and went directly to find a property. After losing about three cars, the property shirked. The owner voted to open the property and replace it with a new one. The new property is a bit expensive, but the car has never been lost. Otherwise, the bike is probably lost, even if the police really catch the car thief, it is useless. Because thieves will never be caught.

By the way, worldwide, the detection rate of low-cost theft is extremely low. China is already very high in this respect.