English ⇄ Russian

be more of an art than a science stresses
busin.	быть в большей мере искусством, чем наукой
idiom.	носить приблизительный характер (Weighing up the popularity of dogs vs cats on the internet is more of an art than a science. capricolya); не подчиняться чётким правилам (However, it should also be remembered that composting is a quirky business, sometimes more of an art than a science. capricolya)