Literal numbers

All primitive mathematical procedures are extended to be generic over
symbolic arguments. When given symbolic arguments, these procedures
construct a symbolic representation of the required answer. There are
primitive literal numbers. We can make a literal number that is
represented as an expression by the symbol “a” as follows:

(literal-number 'a)        ==>  (*number* (expression a))

The literal number is an object that has the type of a number, but its
representation as an expression is the symbol “a”.

(type (literal-number 'a))          ==>  *number*

(expression (literal-number 'a))    ==>  a

— SCMUTILS Reference Manual

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2019.08.17 Saturday ACHK

Multiple dimensions of time

What would be the implications of multiple dimensions of time?

That means the (past) history itself can change, as commonly seen in time travel stories.

But wouldn’t that be the case with one dimension also?

In reality, there is only one dimension of time, meaning that the state of a system keeps changing, forming the timeline. But the timeline itself cannot be changed once formed. In other words, (past) history cannot be changed.

— Me@2019-08-11 04:07:48 PM

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2019.08.11 Sunday (c) All rights reserved by ACHK

(反對)開夜車 4.2

平均而言,你仍必須要有,充足的睡眠。亦即是話,某一天睡少了,就必須於在當個星期,還回「睡債」。

例如,如果你的充足睡眠是,每天七小時,而你在某一天只睡了六小時的話,你就有義務,在當個星期的另一天,睡多一小時。一般而言,「另一天」是指週末,或者其他假日。

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另外,有時,只要跳出框框,破格思考,你會發現,或者,只要你的時間表稍改一點,就根本毋須「開夜車」。

例如,我在大學一年級時,發覺日間的課堂,加課外活動,異常充實。回到家時,就已經累到,根本集中不到精神研習。

我當時靈機一觸想到,與其沒有精神地研習,倒不如每晚九時半就睡,凌晨三或四時才起床。那樣,七時多出門前,我就會有,三至四個小時的專心時空。

— Me@2019-07-30 11:11:42 PM

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2019.08.03 Saturday (c) All rights reserved by ACHK