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Hans Gross

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Hans Gross was a man who changed how we find the truth. He was an Austrian jurist and a scientist. A jurist is a person who studies and works with the law. Because of his important work, people call him the "Founding Father" of criminal profiling. Criminal profiling is a way to understand why people act the way they do.

He wanted to make the justice system much better. He believed that science could help solve mysteries more fairly. This helped move the world toward using facts instead of guesses.

Gross saw that the old way of doing things had many problems. In his job, he worked as an Examining Justice of Styria. This meant he acted as both a judge and a prosecutor. Back then, there were not many professional crime investigators. Many officers were just volunteers or former police workers. This led to many mistakes in court.

Judges often relied on their own limited knowledge. They did not always have the right evidence to make good decisions.

To fix these problems, Gross used the scientific method. He taught people to look at a crime scene very carefully. He believed that investigators must balance their emotions with logic. He also wanted people to use tools like X-rays and microscopes.

He suggested using fingerprints and crime scene photography to find clues. He even thought that studying chemistry, physics, and botany could help. By using these sciences, investigators could find real facts about what happened.

Gross spent many years teaching his new ideas to others. He was a professor at several different schools. He taught at Chernivtsi University from 1897 to 1902. Then, he taught at Prague University from 1902 to 1905. Finally, he worked at the University of Graz from 1905 to 1915.

In 1898, he started the Institute of Criminology of Graz. In 1893, he published his famous book called "Criminal Investigations, a Practical Textbook." This book helped explain how to study human nature and motives.

Today, we can see his influence in many places. His ideas helped create the modern way we study crime. Many people now use the scientific methods he first described. In New York, one famous detective agency is even named the Gross Investigation Bureau.

His life shows how studying science can help people be more just. He turned the study of crime into a real science for the whole world to use.

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