Holmes holds a detective He used his knowledge of science, logic, observation and experimentation. Used to always considered criminal. Although he likes to keep the results out. And a surprise to others by gradually revealing the crux of the case to know little by little and Holmes is capable of analyzing physical evidence accurately.
Well,not only holmes is intelligent and observant. His intimate,Watson,he also has it too but holmes can use his ability to solve his problems better than his intimate.Holmes likes to do the experiment and investigate.That make him have many experience skill to survive.Do you know James Moriaty? He is the first enemy of holmes.He also have observant and intelligent skills,unfortunate he use skills in wrong way.
I agree your opinion.Detective must be observant,if you don't has this you shouldn't be a detective.But detective must be knowleage and lucky too.If you has this.You can be best detective like Sherlock Holmes.I think observant it is very important for detective.
I agree with your topic observent is common skill but it can use manytimes when you have ploblem.For holmes he have good observent.I can not tell he have better this skill than everybody but he can use this skill very good.Lastly I can not tell you how to use this skill but I think it depend on you .
His skepticism led into questioning following by answering that question. Also his experiences and skills led into solve many mysteries and issues. Also, what do you mean in terms of observant led into his survival from danger? Do you mean danger from someone hunting Holmes down or danger from what.
Sherlock holme is a good detective for sure. His observations is brilliant and can't find someone to compare ,although he just a character in literature but he inspired most people and we can be like him on one day!!!