Data types are important and neglecting them leads to serious consequences. Modern languages like JavaScript and Python are using “duck typing” to determine the type of variable. In most of cases, your language interpreter will handle types in the correct way. The problem starts when your program needs to run (even simple) equations on large numbers.
Matéush
@msokola
Grew my career from $15,000 to $100,000+ annual salary. Now sharing everything I learned along the way.