diff --git a/config/survey.jl b/config/survey.jl
index fd6c141..dcb3725 100644
--- a/config/survey.jl
+++ b/config/survey.jl
@@ -24,8 +24,12 @@ the questions you see now will not neccesarily be in the final survey.",
             "Which version of Emacs do you use?",
             ["29 (master/HEAD)" => "29.0",
             "28.2", "28.1", "27.2", "27.1", "26.3", :other],
-            validators = v -> if isnothing(match(r"^\d+\.\d+$"))
+            validators = v -> if isnothing(match(r"^\d+\.\d+$", v))
                 "Please give the MAJOR.MINOR version number as your response"
+            elseif parse(VersionNumber, v) < v"18"
+                "Ok, this is pushing the bounds of believability a bit much..."
+            elseif parse(VersionNumber, v) > v"29.0"
+                "You should have mentioned that you're a time traveler!"
             end),
         MultiSelect(:emacs_motivations_current,
             "Which features keep you using Emacs?",