1. The person maybe more capable then what you think – There are times when you take a glance of a person and he will give you that no-confidence look.  The assurance that he is able to give is almost zero.  But amazingly, at times of crisis, or critical situation, he is able to deliver as what you want.  He may not be able to shine in his normal self, but at extreme situations, he outshone everyone in his capabilities.  Now looking back, if you did feel he is incapable, you may feel that you’ve already made a wrong judgement from the start!
2. The person maybe less capable then what you believe he to be – Usually such people are good in delivering quality lip services.  They promise the whole universe for you.  But when it comes down to the crunch, they are unable to deliver what they promised to you.  They dodge questions.  The shift responsibilities.  However, the problem is, you never know if they are capable in the first place.  Unless you are really really good in determining a person’s true character.  What you should do is to give yourself time to observe this person.  Make him win your trust in his capabilities.  Take his words at face value till he can uphold what he is capable of.
3. You never know who you will end up with – By having the wrong impression of a person that he is not capable enough, you are likely going to look down on him or his achievements.  Now, with the world so small and the industry that you are working in small as well, there will be a likely chance that you will meet the same person again (especially in a small country).  Don’t offend the person as his achievements one day may be greater than you.  You might need his help in future too!  Do not be a snob now!  You will regret for doing that in future.  Learn to be modest when you are meeting people.

Our immediate advice to you on judging people is, do not judge people in the first place.  We are no good judge ourselves and it’s best to keep our modest opinion on others to ourselves.  Give some room for doubts.   Learn to observe the person more, find out if he honours what he committed to do.  If a person is always underperforming in your eyes, give some room for doubts.  He may not be what you believe he is to be.  Learn not to jump into conclusion after meeting the person.  Time will truly tell if the person is worth what type of person he is.  Again, the saying goes, “Don’t Judge the Book by its Look!”