(Continuation from yesterday)

Then, I will start the summary.

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Q: Why is "trigonometric function" necessary?

A: So far we have been successful in education including "trigonometric functions"

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In the past week's diary, I

(1) described the purpose and significance of trigonometric functions,

(2) described how it is useful,

(3) argued that it is hardly worked by current education,

(4) said "we can not explain with persuasive logic" after I discussed the above (1)-(3), and

(5) described that the discussion on necessity of trigonometric functions is "ineffectual" and even "barren" as a result.

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With education including "trigonometric functions", --- even if I do not know whether it contributes to individual happiness ---

at least as a means to become an excellent "military person" to support the nation, or to commercialize "high efficiency" production equipment "

Only the "past record" is

the only basis for "the need for trigonometric functions" at the moment,

I concluded.

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As a personal opinion, I am thinking if we try to stop "trigonometric function" education.

(In addition, I think it would be good to abolish both "old sentence" and "physical education")

I have a strong interest, as an antithesis to "spit on" the current "super elite education"

However, since it is called antithesis, we should include something to replace trigonometric functions. But I do not know what it will be.

In this time, so-called "patriotic education (nationalist education)" or "moral education" may come in.

In any case, I don't hope that children go to "obscurantist education"

I think that I will pass away before Japan collapses, so

I don't care of it at all.

Moreover,

I would rather watch it (a process to collapse dynamically).