Let's try to understand this in simple terms. I just learnt the alphabet. But I never intrested in or tried to learn the words. Also never looked for learning grammar. But I always wished to write a bestselling novel.
Yes you may laugh hard on me. But this is the reality of everyone who wanted to become a great programmer. I did these mistakes because everyone around me was doing the same.
So, now discuss real term of these mistakes. Alphabet is Programming Language. Words are Data Structures. Grammar is algorithms. Novel is Development.
Just comment below what are your mistakes.