• Robotics is the engineering branch that deals with the conception, design, construction, operation, application, and usage of robots. Digging a little deeper, we see that robots are defined as an automatically operated machine that carries out a series of actions independently and does the work usually accomplished by a human.


• A android is a robot designed to look or behave like a human being. The resemblance to humans may be relatively mild or life-like in appearance. Although androids have long been the province of science fiction.


They work in hazardous environments: Why risk human lives when you can send a robot in to do the job? Consider how preferable it is to have a robot fighting a fire or working on a nuclear reactor core.
They’re cost-effective: Robots don’t take sick days or coffee breaks, nor need perks like life insurance, paid time off, or healthcare offerings like dental and vision.
They increase productivity: Robots are wired to perform repetitive tasks ad infinitum; the human brain is not. Industries use robots to accomplish the tedious, redundant work, freeing employees to tackle more challenging tasks and even learn new skills.
They offer better quality assurance: Vigilance decrement is a lapse in concentration that hits workers who repeatedly perform the same functions. As the human’s concentration level drops, the likelihood of errors, poor results, or even accidents increases. Robots perform repetitive tasks flawlessly without having their performance slip due to boredom.


They incur deep startup costs: Robot implementation is an investment risk, and it costs a lot. Although most manufacturers eventually see a recoup of their investment over the long run, it's expensive in the short term. However, this is a common obstacle in new technological implementation, like setting up a wireless network or performing cloud migration.
They might take away jobs: Yes, some people have been replaced by robots in certain situations, like assembly lines, for instance. Whenever the business sector incorporates game-changing technology, some jobs become casualties. However, this disadvantage might be overstated because robot implementation typically creates a greater demand for people to support the technology, which brings up the final disadvantage.
They require companies to hire skilled support staff: This drawback is good news for potential employees, but bad news for thrifty-minded companies. Robots require programmers, operators, and repair personnel. While job seekers may rejoice, the prospect of having to recruit professionals (and pay professional-level salaries!) may serve as an impediment to implementing robots.


This really doesn't need an explanation,
We've all seen The Terminator.


      ⣠⣶⣿⣿⢳⣿⡇⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢸⣶⣭⣻⢿⢯⣞⡝⣿⣿⣫⢃⣛⣵⣾⣿        ⢀⣾    
      ⣰⣿⣿⣿⣏⣿⣿⡇⣿⣿⣿⣿⣿⣿⣿⡿⣟⣯⣷⣾⢸⣿⣿⣿⣷⣿⡏⠁⣿⣿⡀⢸⣿⣿⣿⣿        ⣼⣿    
     ⣼⣿⣿⣿⡟⣼⣿⣿⡇⣿⣿⣿⣿⡿⣟⣽⣾⣿⣿⣿⣿⡏⣿⣿⣿⣿⣿⣷⡴⠿⢟⣛⣭⣭⣭⣭⣝⣀      ⢠⣿⣿⡀   
    ⣸⣿⣿⣿⣿⢱⣿⣿⣿⡇⣿⣿⡿⣫⣾⣿⣿⡿⣻⣵⣶⣿⣿⣷⣶⣶⣶⣶⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣦⡀   ⢸⣿⣿⡇   
   ⢰⣿⣿⣿⣿⡟⣾⣿⣿⣿⣧⠹⣫⣾⣿⣿⣿⣫⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣆  ⢸⣿⣿⣿   
   ⣿⣿⣿⣿⣿⡇⣿⣿⣿⣿⣿⣎⢿⣿⣿⣿⣳⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣆ ⢸⣿⣿⣿⡇  
  ⢸⣿⣿⣿⣿⣿⢹⣿⣿⣿⣿⣿⣿⣦⡻⣿⢧⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢹⣿⣿⣿⣿⣿⣿⣿⣿⣇⢿⣿⣿⣿⣿  
  ⣾⣿⣿⣿⣿⣿⢸⣿⣿⣿⣿⣿⣿⣿⣿⡆⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠸⣿⣿⣿⣿⣿⣿⣿⠿⣿⡎⣿⣿⣿⣿⡇ 
  ⣿⣿⣿⣿⣿⣿⡜⣿⣿⣿⣿⣿⣿⣿⡿⣹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡏⣿⣿⣿⣿⣿⣿⣿⣿⣿⢀⢻⣿⣿⣿⡿⠛⣡⣾⣿⣿⡜⣿⣿⣿⣇ 
 ⢸⣿⣿⣿⣿⣿⣿⡇⣿⣿⣿⣿⣿⣿⢟⣵⣟⣼⣿⣟⠻⣿⣿⣿⣿⣿⣿⣿⢁⢿⣿⣿⣿⣿⣿⣿⣿⡿⣼⣎⢿⠿⢋⣴⣿⣿⣿⣿⣿⣷⡹⣿⣿⣿ 
 ⢸⣿⣿⣿⣿⣿⣿⣧⢻⣿⣿⣿⣟⣑⣚⢍⣾⣿⣿⣿⣷⣦⣙⠻⣿⣿⣿⢧⣿⡸⣿⣿⣿⣿⣿⣿⣿⢇⣿⠟⣀⢶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣜⠿⡟ 
 ⢸⣿⣿⣿⣿⣿⣿⣿⡘⣿⣿⣿⡿⢟⣵⣿⣿⣿⣿⣿⣿⣿⣿⣷⣦⡙⠣⣿⣿⣧⢻⣿⣿⣿⣿⣿⠏⠜⡡⠞⠛⠃⠙⠿⠿⣿⣿⣿⢿⣿⣿⠿⣫⠇ 
 ⠈⣿⣿⣿⣿⣿⣿⡟⣷⢜⣫⣽⢞⣿⣿⣿⣿⣿⣿⣿⣿⡿⣿⣿⠟⠵⠷⢬⡙⢿⡜⣿⢹⣿⣿⢏⣴⠊⣠⠶⠿⢷⣦⣄⠈⢙⣛⡛⣃⣐⣶⣾⠏  
  ⣿⣿⣿⣿⣿⣿⣧⣿⣿⣔⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠂⣠⡤⠴⠦⢤⣙⣿⣧⠛⣼⠟⣡⣾⣿⣾⣿⡗  ⠹⣿⣆⠈⣙⡇⣿⣿⡿⠋   
  ⢸⣿⣿⣿⣿⣿⣿⢉⣾⣿⣿⣿⣿⣿⣿⣿⡿⠿⠟⠃⢠⣾⣿⡷   ⠻⣿⣿⣴⣷⣿⣿⣿⣿⡇⠉    ⢻⣿⡆⢿⣇⠛⠉     
  ⠘⣿⣿⣿⣿⣿⣿⢸⣿⣿⣿⣿⣿⣶⣤⣲⣶⣾⠿⢀⣿⣿⠙⠁   ⡀⢻⣿⣿⣿⣿⣿⣿⣿⣧⠰⣄⣀⣠⡇⢸⣿⣧⢺⣿⡄      
   ⣿⣿⣿⣿⣿⣿⡏⣿⣿⣿⣿⣿⣿⣿⢻⣿⣿⡇⢸⣿⣷⠠⣄⡀⢀⣰⡇⣸⣿⣿⣿⣿⣿⣿⣿⣿⣦⡙⠿⠿⣡⣿⢿⣿⡏⣿⣷⡀     
   ⢻⣿⣿⣿⣿⣿⣿⣹⣿⣿⣿⣿⢏⣽⢸⣿⣿⣧⠘⣿⣿⣆⠙⠿⠿⢟⣵⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣶⣶⢲⢮⡿⣽⣷⣿⣿⣷     
   ⣸⣿⣿⣿⣿⣿⣿⣧⢿⣿⣿⡏⣾⣯⡍⣿⣿⣿⡼⣯⣟⣛⣻⢶⢼⣟⣿⣿⣿⣿⣿⣿⣿⠿⠿⣿⣿⣿⠿⣫⣏⣾⢳⢳⢇⣿⣿⡿⡇    
   ⣿⣟⣿⣿⣿⣿⣿⣿⣎⢿⣿⡇⣿⡿⡇⢻⣿⣿⣷⣝⠳⠷⢯⢏⣟⣾⡏⣙⣛⢛⣋⣥⣶⣶⣦⣄⡀⠐⠆⣿⣿⣿⣟⣫⢾⣿⣿⡇⠃    
  ⡸⠋⣼⣿⣿⣿⣿⣿⣿⣿⣯⢿⣿⡜⠋⢀⡌⣿⣿⣿⣮⡩⢾⣯⣾⣿⣿⡇⣧⣣⣾⣿⣿⣿⣿⣿⣿⣿⣦ ⣿⣿⣿⣿⢏⣿⣿⠟⠁     
   ⣸⣿⣿⣿⣿⣿⣿⣿⣿⢟⣽⣿⠃ ⣾⣿⡘⢿⣿⣿⣿⣷⡮⣹⣿⣿⡇⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⢱⣿⣿⣿⣋⠚⣩⡵⣸      
  ⢠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣶⢦⣇ ⣿⣿⣿⣤⠓⠈⢽⣭⣾⣿⣿⣿⣷⡘⣿⣿⣿⣿⣿⣿⣿⣿⠟⣡⣿⣿⡿⢛⡁⠘⢛⣱⡇      
  ⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡱⢿⣿⣦⡘⠿⠿⢟⣱⣶⣤⣽⡻⢿⣿⣿⣿⣿⣮⣙⠻⠿⠿⠟⣋⣡⣾⠿⢛⣥⣶⣿⣧⡀ ⠛       
 ⢰⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣾⣿⣶⣻⣿⣿⡏⠛⠿⡟⣫⠁⠸⢭⣝⣛⣛⣛⠿⡟⠛⢋⣭⣥⣶⣾⡟⠛⠋⢉⣁ 
 ⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢛⣛⠓⠉⠛⠇⣀⣤⠶⢎⠠⠇ ⣀⠈⢉⡉⠉⢀⡀⠰ ⠉⠉⠉⠉
 ⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡎⡳⠂ ⣠⡾⣫⣶⣿⣿⣷⣦⣄⣉⣀⣈⣁⣀⣠⣤⣾⣶⣦⣄⡀ 
 ⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢟⠋⡱⠁ ⡰⡟⠑⠿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡦