Re: Uncle Bob

I would take *nothing at all* even with a grain of salt, even a big block of salt like farmers leave out in the field they call a cow lick, from AI 

--Alan 

> On 01/25/2026 2:44 AM EST Daniel Gross <[email protected]> wrote:
> 
>  
> IMHO - "hallucinations" - AFAIK there is and never was a "job type" field in the PSDS. 
> 
> But it's not uncommon for LLM to "hallucinate" and produce results that are simply plain wrong. 
> 
> You then have to "argue" with it to accept the correction. 
> 
> We still have to accept that - no matter how far advanced those models are - they are still driven by statistical probability. 
> 
> And IMHO those hallucination problems will get worse, because they models are now trained partly with data, that is already generated by other LLMs. 
> 
> I have about 10 drafts for blog and LinkedIn posts here, that I wanted to do about Bob since I first seen it at TechXchange - but they all end up not so positive - so right now I keep them to myself, until I have more empirical data. 
> 
> Bob is impressive - some things it really does quite good. But there are so many cases where it quietly fails, but the code looks so convincing.
> 
> Right now, my personal experience says: take everything that ANY LLM/AI is producing with a good (large) grain of salt!
> 
> Kind regards,
> Daniel
> 
> 
> 
> > Am 25.01.2026 um 08:05 schrieb Gad Miron <[email protected]>:
> > 
> > What am I missing?
> > 
> > 
> > I asked Bob the following question:
> > 
> > As an expert RPG programmer, How can you tell if an RPG program runs in
> > Batch or Interactive (PSDS?)
> > 
> > I got the following
> > Using PSDS to Detect Batch vs Interactive Mode
> > 
> > The PSDS (Program Status Data Structure) contains information about the
> > program's execution environment. The key field for determining batch vs
> > interactive mode is at positions 244-253, which contains the job name.
> > Method 1: Check Job Type Field (Position 244-253)
> > 
> > Here's how to implement this in free-format RPGLE:
> > 
> > **FREE// Define PSDSDcl-Ds PSDS Qualified;  PgmName     Char(10)
> > Pos(1);  Status      Zoned(5:0) Pos(11);  PrevStatus  Zoned(5:0)
> > Pos(16);  LineNum     Char(8)    Pos(21);  Routine     Char(8)
> > Pos(29);  Parms       Zoned(3:0) Pos(37);  ExcpType    Char(3)
> > Pos(40);  ExcpNum     Char(4)    Pos(43);  PgmLib      Char(10)
> > Pos(81);  ExcpData    Char(80)   Pos(91);  ExcpId      Char(4)
> > Pos(171);  Date        Char(8)    Pos(191);  Year        Zoned(2:0)
> > Pos(199);  LastFile    Char(8)    Pos(201);  LastFileLib Char(10)
> > Pos(209);  JobName     Char(10)   Pos(244);  // Job name  UserId
> > Char(10)   Pos(254);  // User profile  JobNumber   Zoned(6:0)
> > Pos(264);  // Job number  JobDate     Zoned(6:0) Pos(270);  // Job
> > date  RunDate     Zoned(6:0) Pos(276);  // Run date (YYMMDD)  RunTime
> >   Zoned(6:0) Pos(282);  // Run time (HHMMSS)End-Ds;Dcl-S JobType
> > Char(1);// Determine if batch or interactiveIf
> > %Subst(PSDS.JobName:1:1) >= '0' and    %Subst(PSDS.JobName:1:1) <=
> > '9';  JobType = 'B';  // Batch job (starts with number)Else;  JobType
> > = 'I';  // Interactive job (starts with Q)EndIf;
> > 
> > txt1c1c-queryabapactionscript-3adaadocangular-htmlangular-tsapacheapexapl
> > applescriptaraasciidocasmastroawkballerinabashbatbatchbebeancountberrybibtex
> > bicepbladebslcc#c++cadencecairocdcclaritycljclojureclosure-templatescmakecmd
> > cobolcodeownerscodeqlcoffeecoffeescriptcommon-lispconsolecoqcppcqlcrystalcs
> > csharpcsscsvcuecypherddartdaxdesktopdiffdockerdockerfiledotenvdream-maker
> > edgeelispelixirelmemacs-lisperberlerlangff#f03f08f18f77f90f95fennelfish
> > fluentforfortran-fixed-formfortran-free-formfsfsharpfslftlgdresourcegdscript
> > gdshadergeniegherkingit-commitgit-rebasegjsgleamglimmer-jsglimmer-tsglsl
> > gnuplotgogqlgraphqlgroovygtshackhamlhandlebarshaskellhaxehbshclhjsonhlslhs
> > htmlhtml-derivativehttphxmlhyimbainijadejavajavascriptjinjajisonjljsjson
> > json5jsoncjsonljsonnetjssmjsxjuliakotlinkqlktktskustolatexleanlean4less
> > liquidlisplitllvmloglogolualuaumakemakefilemarkdownmarkomatlabmdmdcmdx
> > mediawikimermaidmipsmipsasmmmdmojomovenarnarratnextflownfnginxnimnixnu
> > nushellobjcobjective-cobjective-cppocamlpascalperlperl6phpplsqlpopolar
> > postcsspotpotxpowerquerypowershellprismaprologpropertiesprotoprotobufpsps1
> > pugpuppetpurescriptpypythonqlqmlqmldirqssrracketrakurazorrbregregexregexprel
> > riscvrsrstrubyrustsassassscalaschemescsssdblshshadershaderlabshell
> > shellscriptshellsessionsmalltalksoliditysoysparqlsplsplunksqlssh-configstata
> > stylstylussvelteswiftsystem-verilogsystemdtalontalonscripttasltcltempl
> > terraformtextftfvarstomltsts-tagstsptsvtsxturtletwigtyptypescripttypespec
> > typstvvalavbverilogvhdlvimvimlvimscriptvuevue-htmlvyvyperwasmwenyanwgslwiki
> > wikitextwitwlwolframxmlxslyamlymlzenscriptzigzsh文言
> > Method 2: Using Job Type from PSDS (Position 304)
> > 
> > In newer IBM i versions, there's a dedicated field:
> > 
> > **FREEDcl-Ds PSDS Qualified;  // ... other fields ...  JobType Char(1)
> > Pos(304);  // 0=Batch, 1=InteractiveEnd-Ds;If PSDS.JobType = '1';  //
> > Interactive jobElse;  // Batch jobEndIf;
> > 
> > txt1c1c-queryabapactionscript-3adaadocangular-htmlangular-tsapacheapexapl
> > applescriptaraasciidocasmastroawkballerinabashbatbatchbebeancountberrybibtex
> > bicepbladebslcc#c++cadencecairocdcclaritycljclojureclosure-templatescmakecmd
> > cobolcodeownerscodeqlcoffeecoffeescriptcommon-lispconsolecoqcppcqlcrystalcs
> > csharpcsscsvcuecypherddartdaxdesktopdiffdockerdockerfiledotenvdream-maker
> > edgeelispelixirelmemacs-lisperberlerlangff#f03f08f18f77f90f95fennelfish
> > fluentforfortran-fixed-formfortran-free-formfsfsharpfslftlgdresourcegdscript
> > gdshadergeniegherkingit-commitgit-rebasegjsgleamglimmer-jsglimmer-tsglsl
> > gnuplotgogqlgraphqlgroovygtshackhamlhandlebarshaskellhaxehbshclhjsonhlslhs
> > htmlhtml-derivativehttphxmlhyimbainijadejavajavascriptjinjajisonjljsjson
> > json5jsoncjsonljsonnetjssmjsxjuliakotlinkqlktktskustolatexleanlean4less
> > liquidlisplitllvmloglogolualuaumakemakefilemarkdownmarkomatlabmdmdcmdx
> > mediawikimermaidmipsmipsasmmmdmojomovenarnarratnextflownfnginxnimnixnu
> > nushellobjcobjective-cobjective-cppocamlpascalperlperl6phpplsqlpopolar
> > postcsspotpotxpowerquerypowershellprismaprologpropertiesprotoprotobufpsps1
> > pugpuppetpurescriptpypythonqlqmlqmldirqssrracketrakurazorrbregregexregexprel
> > riscvrsrstrubyrustsassassscalaschemescsssdblshshadershaderlabshell
> > shellscriptshellsessionsmalltalksoliditysoysparqlsplsplunksqlssh-configstata
> > stylstylussvelteswiftsystem-verilogsystemdtalontalonscripttasltcltempl
> > terraformtextftfvarstomltsts-tagstsptsvtsxturtletwigtyptypescripttypespec
> > typstvvalavbverilogvhdlvimvimlvimscriptvuevue-htmlvyvyperwasmwenyanwgslwiki
> > wikitextwitwlwolframxmlxslyamlymlzenscriptzigzsh文言
> > Method 3: Using API (Most Reliable)
> > 
> > For the most reliable method, use the QUSRJOBI API:
> > 
> > 
> > 
> > 
> > 
> > I see no such fields in RPG Reference Manual , PSDS section.
> > 
> > I must be missing something.
> > 
> > 
> > Gad
> > --
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> > 
> -- 
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