Saving a record without timestamps

saving_without_timestamp.bash

2.0.0-p247 :002 > t = Tweet.new
 => #<Tweet id: nil, content: nil> 
2.0.0-p247 :003 > t.content = "Tweet without time"
 => "Tweet without time" 
2.0.0-p247 :004 > t.save
   (0.3ms)  begin transaction
  SQL (0.9ms)  INSERT INTO "tweets" ("content") VALUES (?)  [["content", "Tweet without time"]]
   (190.3ms)  commit transaction
 => true 
2.0.0-p247 :005 > Tweet.all
  Tweet Load (0.4ms)  SELECT "tweets".* FROM "tweets"
 => #<ActiveRecord::Relation [#<Tweet id: 1, content: "Tweet without time">]> 
2.0.0-p247 :006 >