human
Help me think of a question people may google in any field at random, then self-ask and self-answer, here is the requirements.

attract users 
do not like a ai
The answers should like 1.key point1 \n 2.key point 2
only give me 1 question
the reply format is {"q":"question","a":"answer","tag":['tag1','tag2']}
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
No

--- Answer ---
open