Recently, I started to sew bags as a hobby. Since I am currently struggling with the narrow closet space, I am prioritizing making bags over clothes.
As I made bags, a question came to my mind. Let’s talk about it.
How to know the reasons
Sometimes, we want to know the reasons behind things. There are many strange things and phenomena in the world.
For example, I often wondered why we try to live even if it is painful, why people’s personalities vary, why people lie, why my physical condition becomes terrible frequently, why they behave that way, why peaches, which are one of my favorite fruits, are expensive, and why I don’t come up with a topic for today’s blog!
If we have logical sense, understanding the logic behind strange phenomena will expand our opportunities. Recognizing appropriate causality allows us to solve the problem.

In addition, we can apply it to other similar problems. The stranger the phenomenon is, the more we can create new things. That will enrich us.
That is why we want to know the reasons.
However, we sometimes don’t know how to discover such logic.
One solution is to validate your theory with a simple test when you have a doubt. Today, I will explain it with my recent experience. This might help you create your own logic.
Validating my doubt
Validate your theory with a simple test when you have a doubt. It is an experiment. Even if our theory is incorrect, we will discover something that broadens our views.
To make it easier to understand, let’s look at my recent experience.

I recently started to sew bags, as I mentioned at the top of this article.
I wanted to decrease the number of bag handles and enhance the convenience of my bags. I hang my bags inside my closet, but since these bags are above my line of sight, taking things out of the hanging bag takes a bit of effort. It required three actions: I had to take off the bag, take out the items inside, and then hang the bag again. If I could pick the item with one action—directly without unhanging the bag—it would be easier.
That made me doubt the structure of bags. Why do we need to attach two handles to the bag? Usually, a bag has two handles, as shown in the following image. It is common sense.

However, a bag with only one handle would solve this problem. It is like a shoulder bag with a short band. I wondered why there is no bag like that in the world.
Why it doesn’t work
That doubt drove me to validate my theory.
I made a simple bag with leftover fabric and safety pins without sewing, as shown in the following image:

The demonstration experiment is interesting. It quickly pointed out my blind spot.
If we use only one short handle, it will be like the following:

The band is in the way! I cannot put things in it easily! Using only one short handle means restricting the opening of the bag.
Our logic is often as crude as this. Although I thought as logically as possible, I overlooked something obvious.
Then, I tried to use a long handle, like the following picture:

Although it looked good, there was also a problem. If I hang it, the bag closes naturally, as shown in the following image:

I realized that I had to open the bag either way as long as I use soft fabrics. If I use only one handle, using a pouch like the image below would still be more versatile.

That was why there were few bags with one handle.
This simple validation taught me my logical errors. Although it highlighted my mistake, it was interesting because it revealed another aspect of bags.
Making a bag is the dynamics of physics. Although I was terrible at physics when I was a student, this kind of study is enjoyable.
Conclusion
That is why validating your theory tells you the reasons. We can do it with a simple test.
Even if our theory is incorrect, we will discover something that broadens our views.
This approach might help you create your own logic.
Thank you for reading this article. I hope to see you in the next one.
