Just how close are we to living in Tomorrow's World?

One of the problems with working out how close we are to creating a replicant, is that it's not clear what these human-like beings are. Director of the new Blade Runner 2049, Denis Villeneuve, has described them as "synthetic humans", which are "not very far from humans". What's clear from the original film is that they are some kind of biorobotic form. Let's for a moment assume they are more like robots than clones and, indeed, in the original Philip K Dick account they are explicitly rogue androids. How close are we to creating an android? Sethu Vijayakumar, Professor of Robotics at the University of Edinburgh, observes that there are two elements to this.