If a solution has been working for 20 years, then by Lindy effect there is a good chance it will be relevant in 20 years as well. Basically an old but still act

If a solution has been working for 20 years, then by Lindy effect there is a good chance it will be relevant in 20 years as well. Basically an old but still actively used software or principle implies that it has being compatible with a lot of new things in past and, as such, is rather universal. With new software one does not know if it is the one that will survive challenges from even newer software.