sentences:  Due to the isolation of data, similar to EDGE, dataflow languages are inherently parallel, and interest in them followed the more general interest in massive parallelism as a solution to general computing problems.Studies based on existing CPU technology at the time demonstrated that it would be difficult for a dataflow machine to keep enough data near the CPU to be widely parallel, and it is precisely this bottleneck that modern fabrication techniques can solve by placing hundreds of CPU's and their memory on a single die.Another reason that dataflow systems never became popular is that compilers of the era found it difficult to work with common imperative languages like C++.