“Knowledge” puffs up, but love builds up. If any one imagines that he knows something, he does not yet know as he ought to know (1 Cor 8:1-2).In other words, frequently when people get a bit of knowledge in their heads (especially those who are immature in their faith) it makes them think they know a whole lot more than they actually do (and then leads to pride). Thinking that you are really smart, proves that you are not!
As I mentioned in the previous post, we can practice wrong methods of learning without even knowing it. This creates a problematic situation for those who have a (good!) passion to learn. They begin with the wrong methodology, and then end up applying it to their continued practice of learning. Being prideful about one's knowledge does not go away when further knowledge is gained. The pride just taints that knowledge as well.
I recall once seeing a Dad explain to his 5 year son something about how a car worked. The boy then proceeded to run to all his friends explaining what he had just learned. By the look on his face you would imagine that he had just figured out quantum physics on his own! New converts to Catholicism can easily get puffed up in the exact same way because they read a few books about the faith and then think they are so brilliant they deserve an honorary doctoral degree. People who are more mature in their faith will always be humble about their knowledge. This does not mean that they do not speak about it, but that when they do, they are always aware that they do not know "as they ought to know" (and their humility is evident).
It is a common example of immaturity in the faith when someone presumes that since he knows one detail about a situation or subject that he knows all that he needs to know. This causes these immature "puffed up" Catholics to make quick accusations against others, to be fast to declare every error a "heresy" and to think it right to examine every comment of a theological nature with a fine tooth comb. I often refer to those who are struggling with this issue as being in the "cage stage". The cage stage is when someone is on fire for the faith (which is a good thing) and that fire gets out of control because they do not have enough spiritual formation to know what to do with what they have learned. This state is so dangerous that they should probably be locked up in a cage for the next five years (metaphorically speaking); thus, the "cage stage".
There are many ways to spot when someone is in the cage stage (but is roaming around freely!) and each of us should examine our own hearts in this regard. One is that they constantly want to talk about theology, but have no genuine depth; their topics are often limited to the same few subjects without variation. Another sign of the cage stage is when someone is so excited about their new found faith, that they presume that they should be everyone's teacher (especially on the internet). A third sign is when they portray themselves as being well read (because they have an opinion on everything), but they constantly pronounce technical terms incorrectly (this is because they have no formal training, and have not spent the time to verify what they are reading, they just rush through a few things without any mature guidance).
It is occasionally the case that people with a little bit of "dangerous knowledge" can be calmed down by a friend, parent, or priest, but if their personal pride is at stake, then they usually will not listen to anyone other than those who agree completely with them. It can be frustrating when you meet someone struggling with this type of error because you want to help them, but the error itself is the very thing that will make them doubt your sincerity. When criticized, they usually respond with a claim that the critic is "deceived" or "compromised" because he does not see it their way; they just have a few bits and pieces of knowledge without the genuine depth of the truth (that takes years to grasp fully) so they have gotten "puffed up" as St. Paul said.
Those who are in the cage stage, if left unchecked, will often become satisfied with their limited knowledge and presume that they cannot trust anyone with true spiritual wisdom because the others do not agree with their perspective on things. One of the saddest things about this is that those who could learn more--because they are genuinely hungry for knowledge--end up stagnating because they presume on their own brilliance and refuse to listen to the wise counsel of others.
There are a number of evidences that the Catholic Church recognizes this problem and has worked to overcome it. For example, this "cage stage" experience is the reason why engaged couples need to wait six months between the betrothal and the wedding; it takes time to learn the things necessary to receive the sacrament of matrimony rightly. Another example is the standard RCIA process of catechesis. Most often classes last at least eight months. This is so that they can take time to let things sink in and not presume that what they know on day one is sufficient to understand the Catholic faith. Bad decisions are always made when someone does not have enough information. With formal training we can grow in our faith, with "I taught myself" we can get stuck in a prideful rut of distrust.
Look deeply into your own heart to see if you suffer from the "cage stage" in any way (realize some people can get stuck in this stage for many years!). Humility is hard, but it is always worth the effort. Take to heart St. Paul's admonition that none of us "knows as we ought" to know. We all have room for growth. Next, if you know someone in the cage stage, then pray for them. Pray that they will find humility and pray that they will realize the need to "learn like a Catholic" and be in full submission to the Church and the deposit of the faith (all of it). Let us work to restore the faith of our fathers, but let us do it in a godly manner.