i don’t know whether it’s an evolutionary advancement neurotypicals will never understand  now im not an evolutionary biologist but i am a biologist so i do have some knowledge on the subject id say that adhd is one of many qualities of an individual that can be useful and thus it has remained in human populations the mania can sometimes be very useful in finding out solutions to difficult problems or to complete a lot of work in a short period of time the general lack of attention i feel is very beneficial for adjusting to new environments you can pick up a lot of information fairly rapidly in tidbits all over  but like most differences from the norm these characteristics arent optimal for most situations which is why we usually struggle so much evolution doesnt care whether something is optimal it only cares how well that quality can help spread and keep your gene copies in the gene pool clearly adhd has helped do that often enough   or it could be connected to other genes that have other benefits for example people with sickle cell disease 80 of which live in sub-saharan africa which can give you anemia swelling of the hands and feet bacterial infections and lead to a stroke is still fairly common in the area this is because the carriers of that gene but not the sick themselves are more protected against malaria