Rust’s built-in notion of safety is intentionally focused on memory + data-race properties at compile time. logic, timing, and determinism are left to libraries and design. Ada (with SPARK & Ravenscar) treats contracts, concurrency discipline, and timing analysis as first-class language/profile concerns hence a broader safety envelope.

You may choose to think from safety guarantee hierarchy perspective like (Bottom = foundation... Top = highest assurance)

Layer 6: FORMAL PROOFS (functional correctness, no RT errors) Ada/SPARK: built-in (GNATprove) Rust: external tools (Kani, Prusti, Verus)

Layer 5: TIMING / REAL-TIME ANALYSIS (WCET, priority bounds) Ada: Ravenscar profile + scheduling analysis Rust: frameworks (RTIC, Embassy)

Layer 4: CONCURRENCY DETERMINISM (predictable schedules) Ada: protected objects + task priorities Rust: data-race freedom; determinism via design

Layer 3: LOGICAL CONTRACTS & INVARIANTS (pre/post, ranges) Ada: Pre/Post aspects, type predicates (built-in) Rust: type states, assertions, external DbC tools

Layer 2: TYPE SAFETY (prevent invalid states) Ada: range subtypes, discriminants Rust: newtypes, enums, const generics

Layer 1: MEMORY SAFETY & DATA-RACE FREEDOM Ada: runtime checks; SPARK proves statically Rust: compile-time via ownership + Send/Sync

PDF is less likely to contain executable malicious code than other formats.

Is it? More so than say .csv file ?

I was under the impressions that pdfs are not that safe. I thought they can do stuff like execute a subset of PostScript and Javascript.

Look, when it comes to corporate reporting, PDFs are pretty much the gold standard. Sure, they've got some potential security issues, but any decent company's IT department has them well in hand.

Think about it - you want your reports to look sharp, right? PDFs deliver that professional look every time, no matter who opens them or on what device. Plus, they've got all those nifty features like password protection and digital signatures that the big guys love.

CSV files? They're great for crunching numbers, but let's face it - they look about as exciting as a blank wall. Try sending a CSV report to the board of directors and watch their eyes glaze over.

So, yes, for reporting in a company that's got its security act together, PDFs are your best bet. They're like the well-dressed, security-savvy cousin of other file formats - they look good and keep things safe.

More than plain text? I doubt so.

common people don't talk about plain text. what are you? a hacker?!?

I mean I guess you don't care as long as the file is signed if it is just some regulatory stuff that barely anyone would ever read anyway.