However, there are ways around this, because we all know that there are tons of untried ideas still out there, and plenty of them will turn out to be every bit as reliable as we need, it's just that we don't yet know they are reliable when we are at this planning phase.
Mais il y a des moyens de s'en sortir. On sait tous qu'il y a une montagne d'idées non testées, et de nombreuses d'entre elles seront aussi fiables que nécessaire. Mais on ne le sait pas encore quand on est au stade de la planification.