It would be wonderful if the question of chemtrails could be answered as simple as con-trails dissipate immediately while chem-trails hang around. Unfortunately, this is not quite accurate.
Although I personally cannot remember what the behavior of con-trails was when I grew up let’s say more than 40 years ago, but I have paid particular attention to historic footage especially of the WWII bombing of Germany. In much of the footage you can clearly see the enormous con-trails even propeller bombers like the B-17 or B-24 left behind. In quite a few of this films you can also see that sometimes the con-trails were not immediately dissipating but hanging around for quite some time, while at other times no con-trails were left behind.
I have also spoken to several survivors of the bombing of Germany, who also confirmed that sometimes after bombing runs over their city, con-trails were still visible after the bombing had stopped. I guess you pay more attention and remember better, when your life is at stake. Con-trails are clearly dependent on atmospheric conditions.
Now, what does that mean for us and the issue with the chem-trails?
Firstly, the circumstance that nowadays jets sometimes leave trails which hang around instead of dissipating fast, is not prove of chem-trails.
Secondly, the circumstance that nowadays jets sometimes leave trails which hang around instead of dissipating fast, is not prove that they are NOT chem-trails.
Thirdly, the circumstance that nowadays jets sometimes leave trails which hang around instead of dissipating fast, makes the theory of chem-trails more possible than not.
None dissipating trails are simple one issue that together with other facts and unexplainable make the use of chem-trails more plausible. There are government documents available which mention chem-trails and which legalizes that the government can test or spray chemicals or biological compound on the American citizen:
U.S. CODE TITLE 50, SECTION 1520(a) S 1520. Repealed. Pub Law. 105-85, Div. A, Title X, S 1078(g), Nov. 18, 1997, 111 Stat. 1916S 1520a. Restriction on the use of human subjects for testing of chemical or biological agents
(a) Prohibited activities The Secretary of Defense may not conduct (directly or by contract)- (1) any test or experiment involving the use of a chemical agent or biological agent on a civilian population; or (2) any other testing of a chemical agent or biological agent on human subjects.
(b) Exceptions Subject to subsections (c), (d), and (e) of this section, the prohibition in subsection (a) of this section does not apply to a test or experiment carried out for any of the following purposes: (1) Any peaceful purpose that is related to a medical, therapeutic, pharmaceutical, agricultural, industrial, or research activity. (2) Any purpose that is directly related to protection against toxic chemicals or biological weapons and agents. (3) Any law enforcement purpose, including any purpose related to riot control.
(B) Such terms include exotic weapons systems such as--
(i) electronic, psychotronic, or information weapons;
(iii) high altitude ultra low frequency weapons systems;(iv) plasma, electromagnetic, sonic, or ultrasonic weapons;
(v) laser weapons systems;
(vi) strategic, theater, tactical, or extraterrestrial weapons; and
(vii) chemical, biological, environmental, climate, or tectonic weapons.
(C) The term `exotic weapons systems' includes weapons designed to damage space or natural ecosystems (such as the ionosphere and upper atmosphere) or climate, weather, and tectonic systems with the purpose of inducing damage or destruction upon a target population or region on earth or in space.