In recent months, videos from China began to go viral, showing humanoid robots with extremely realistic faces, blinking naturally, moving their eyes precisely, reacting to the environment as if they were conscious.

One of the most recent examples was presented by the company AheadForm with models capable of expressing almost imperceptible facial micro-expressions, the same ones that we use without realizing it in daily life, this completely changed the game because until now robots could be efficient, but they were not socially accepted, they worked, but they did not connect, and that may be the true bottleneck of humanoid robotics, acceptance.

A robot can execute tasks precisely, but without expression, without reaction, without presence, it is still just a machine, now that is changing, these new systems use synthetic skin, extremely precise micro actuators and artificial intelligence capable of interpreting and responding to visual, auditory and social stimuli in real time, the robot not only executes an action, it reacts, it observes, it responds and interacts, and when that happens, the perception changes completely, because we are no longer looking at a machine, we are looking at something that behaves like one of us.

This has always made us wonder to what extent a robot needs to appear to us to be accepted, some specialists defend and it is essential, mainly in areas with customer service, health, education and social coexistence, environments where it is not enough to function, it is necessary to communicate, but there is another side, the more similar to a human a robot becomes, the greater the confusion, the so-called “valley of strangeness”, that point in which something is almost human, but not enough, can cause rejection instead of acceptance and that creates a paradox. Robots need to look human, but they can't look too human, yet the industry seems to have made a decision.

The future of humanoids will not be defined only by strength, speed or precision, but by the ability to look at us while they appear alive and if this trend continues, the most important component of a robot could stop being its body and become the face, because in the end it is not what a machine does, what defines the interaction is what we feel when looking at it, because perhaps the true integration is not in the body, but in the mind.