I have been building model cars for over 60 years. When I began I used my Mother's finger nail polish as paint. I am hoping to advance a little beyond that medium. Have just purchased my first air brush and have been viewing YouTube videos and now am totally confused. Thinning acrylic paint: some call the liquid: reducer, some thinner and Music City Model Works refers to 'future'. First question if it is infact acrylic, why not plain water. Second question what the heck is future? Thank you for any information which you share with me.