In response to the topic that Progressives are too emotional, there is a scientific basis for this. There are pitfalls for an overly emotional orientation.
When the brain writes to memory, aspects of the limbic system, which control emotions, adds an emotional tag to the sensory input data, as the brain writes to the cerebral matter. Our memory has both sensory based content and emotional tags.
This schema is useful and was designed for the animal, since if they are in the same situation and their memory is triggered, they will react to the feeling, without having to think. If an unusual food object they encounter, triggers a previous memory feeling of "tastes good", they will act on this feeling, and eat without having to reinvent the wheel.
This binary nature of memory, in conjunction with willower and choice, allows humans to approach our memory from either the emotional tag side or the sensory content side, and trigger the memory. For example, I can think about my favorite food and this will make me hungry. This food memory had an attached feeling connected to hunger. I trigged the memory feeling by its sensory content.
Or I can become hungry at noon time. The feeling of hunger will then induces images of food in my head, from which I chose my lunch. Feelings can induce sensory content. Although both methods of inducing memory are possible, each impacts the memory in different ways.
There are far more possibilities in terms of sensory content. Sensory based memory pictures are as diversified as realty. No two snow flakes are exactly the same in terms of sensory detail. The emotions, on the other hand, are much more limited. There is a smaller number of feelings that are used to tag everything. The result is the brain recycles feelings, and attaches the same feeling, to a large variety of similar sensory content. This is connected to the spatial aspects of the brain.
The same feeling; tasty food attached to memory, can occur in every restaurant we visit, even if sensory content; entree and spices, are all over the board. But each food is very specific in terms of contents and chef; one of kind, but all can create the same nice tasting feeling.
If one is too emotional and routinely triggers the emotional side of memory, one uses a limited number feelings to draw conclusions, about an endless diversity of sensory content. Racism works from the emotional side. Another good example is Trump is hated in every way by the left. They can see no good. Or all memories connected to Trump, use the same feeling tag, even though this is not rational. Why would one hate a loving relationship between father and daughter simply because he is Trump? This is not rational due to the lumping affect.
If one approached this same situation from the sensory content side, then each of thousands of unique items and situations, could have it own feeling tag based on similar or parallel memories. Many may add to hate, but many will add to like. But if you go only by feeling, first, you will use a block method to define reality without any rational nuance based on life experience.
The feeling approach to memory also makes one more vulnerable to propaganda and programming. All that needs to happen is the leadership needs to induce a feeling; hate, and get that feeling to persist and even resonate; brain goes into a specific chemical output loop. While this chemical loop is playing; hate, you add new sensory content; propaganda, hoping the memory tagging process, is tricked, due to the brain being pre-saturated with neurotransmitters connected to hate.
Dogs use emotions more than sensory content. Their instincts are adaptive to classes of behavior connected to the emotional tags. They are always happy to see when you walk through the door, even if you left on a bad note. Your entry image trigger happy feelings. Dog training uses the same methods you can use on emotional thinkers. The dog whistle, called PC, turns passive dogs into attack dogs, due to conditioned emotional triggers of hate added during hate chemical brain saturation. I trained my dog to be calm. He starts with a calm brain chemical environment I then add sensory content; life situations
If you use the sensory content approach toward triggering memory, propaganda and programing is much slower, since each item is treated separately in terms of pre-existing feeling tags. The leadership will need to provide proof or somehow change the feeling for each thing. This makes it harder to saturate the brain with one set of neurotransmitters; one feeling tone, since each memory of a grouping, may have a different feeling, and this will disrupt a uniform chemical background for block memory writing.
If you recall, Trump was initially portrayed as similar to Hitler with Nukes, to induce fear and hate; a negative background chemical environment in the leftist brain. This is done without proof, since they are dealing with emotional first people, where proof is in the feeling tag, not the content. The Hitler angle is not as common now, because the programing has advanced due to a continuous self induced neurochemical environment trigged by dog whistles that trigger the hate feeling. This has had an impact on the snow flakes since this brain chemical environment, is not healthy in the ling term, since fight and flight uses too much energy and is not designed as a long term output. This can mess-up the brain; battle fatigue.