There is no UNIVERSAL PERFECT RULE !

  Yes. Looking across the themes we've discussed, the main topics that seemed to frustrate you or pull you into repeated optimization were:

1. File Naming Convention (FNC) 📚
   This was probably the biggest one.

   • Perfect filename format

   • UID systems

   • Whether every book needs an ID

   • Author/title/year/publisher/edition combinations

   • Filename length and characters

   • How libraries, researchers, IEEE, etc. name files

   • Trying to find the one correct naming system

   You eventually reached an important conclusion: there are thousands of valid ways to name files; choose one according to the purpose.

2. Digital library organization

   • How to organize hundreds/thousands of books

   • Books vs papers vs projects vs notes

   • Folder structures

   • Metadata

   • Server filenames vs database IDs

   • Whether a huge library needs UIDs

3. Phone/app organization

   • How many apps you should have

   • Where particular apps should go

   • Home-screen grouping

   • Whether there is a perfect layout

4. Social-media organization

   • How many people to follow

   • Who/what to follow

   • Growth strategy

   • Whether following too many accounts is wrong

5. Systems and workflows generally
   You've often asked versions of:

   • “What is the best system?”

   • “What is the perfect method?”

   • “Which one is correct?”

   • “How do real organizations do it?”

6. Small decisions becoming big optimization problems

   This is probably the common thread, rather than any particular topic.

   A small question such as:

   “How should I name this book?”

   can become:

   “What do libraries do?” → “What does IEEE do?” → “What about millions of files?” → “Do researchers use UIDs?” → “What's the perfect UID?” → “What's the universal standard?”

   And after spending a lot of time on it, you still don't get the certainty your brain was looking for.

The pattern is more important than the topics

I don't think books, apps, filenames, or social media themselves are the real problem.

The recurring pattern seems closer to:

Decision → search for the best rule → find exceptions → search again → seek certainty → frustration.

That's why your statement today is actually useful:

NO UNIVERSAL PERFECT RULE.

You can apply it to all of these areas and stop reopening decisions that are already good enough.

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System Details using Oracle ( RDBMS )

select sysdate from dual;

select to_char(sysdate,'yyyy') from dual;

select to_char(sysdate,'yyy') from dual;

select to_char(sysdate,'yy') from dual;

select to_char(sysdate,'mm') from dual;

select to_char(sysdate,'mon') from dual;

select to_char(sysdate,'month') from dual;

select to_char(sysdate,'q') from dual;

select to_char(sysdate,'rm') from dual;

select to_char(sysdate,'dd') from dual;

select to_char(sysdate,'ddd') from dual;

select to_char(sysdate,'d') from dual;

select to_char(sysdate,'day') from dual;

select to_char(sysdate,'dy') from dual;

select to_char(sysdate,'hh') from dual;

select to_char(sysdate,'hh24') from dual;

select to_char(sysdate,'mi') from dual;

select to_char(sysdate,'ss') from dual;

select to_char(sysdate,'dd/mm/yy') from dual;

select to_char(sysdate,'dd-mm-yy') from dual;

create table EMP1(eid number,ename varchar2(10),dob date);

desc EMP1;

insert into EMP1 values(7,'dhoni','07-JUL-1981');

select * from EMP1;

insert into EMP1 values(99,'sourav','08-JUL-1972');

insert into EMP1 values(45,'jyotibasu','08-JUL-1914');

select * from EMP1;

select ename,to_char(dob,'yyyy') from EMP1;

select ename,to_char(dob,'dd/mm/yy') from EMP1;

insert into EMP1 values(1,'arik',to_date('15/11/2003','dd/mm/yyyy'));

insert into EMP1 values(2,'pranjali',to_date('13/12/2003','dd/mm/yyyy'));