There have been enormous strides here. We have developed WebAssembly and WIT, with Extism as a chrome over then providing tower of babel between most programming language pairs. We have GraalVM and Truffle to unify languages under one compiler. We have LLVM bitcode to combine languages targeting native machine code for many architectures directly. Swift, Zig, Jai all implement C interop on their own terms. AI agents allow us to re-target algorithms between languages with no compiler interoperability. There are countless pretty darn good ways for programs to communicate through message passing - MachO XPC, Dbus, COM, gRPC, HTTP3 (+ , ZeroMQ, Fuchsia Zircon+FIDL, unix domain sockets. There are more programmers now than at any time in history.
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There have been enormous strides here. We have developed WebAssembly and WIT, with Extism as a chrome over then providing tower of babel between most programming language pairs. We have GraalVM and Truffle to unify languages under one compiler. We have LLVM bitcode to combine languages targeting native machine code for many architectures directly. Swift, Zig, Jai all implement C interop on their own terms. AI agents allow us to re-target algorithms between languages with no compiler interoperability. There are countless pretty darn good ways for programs to communicate through message passing - MachO XPC, Dbus, COM, gRPC, HTTP3 (+ , ZeroMQ, Fuchsia Zircon+FIDL, unix domain sockets. There are more programmers now than at any time in history.