A Reflection Paper on “How much input do you need to learn the most frequent 9,000 words?” Summary The purpose of this study is to resolve the McQuillan and Krashen versus Cobb debate. While McQuillan and Krashen consider that learners would be able to read a wide range of texts with relative ease and speed, Cobb argues that given the difficulty of the material and the time available, learners could not get through enough reading to meet the words at each level, let alone have enough repetitions to learn them. Thus, this study looks at how much input is needed to gain enough repetition of the 1st 9,000 words of English for learning to occur by answering the 3 research questions: 1. How much input do learners need in order to meet the most frequent 9,000 word families of English enough times to have a chance of learning them? An essential condition for learning is repetition, and so learners not only need to gradually meet the most frequent 9,000 word families, but they have to meet them often enough to have a chance of learning them. In this study, the moderately safe goal of 12 repetitions is taken as the minimum. Twelve repetitions, according to the word family lists created from the BNC and the COCA and the analysis by the Range program, are enough to allow the opportunity for several dictionary look-ups, several unassisted retrievals, and an opportunity to meet each word in a wide variety of contexts. 2. Can learners cope with the amount of input? In order to read without unknown vocabulary becoming too much of a burden, no more than 2% of the running words should be beyond the learners’ knowledge (Hu & Nation, 2000; Schmitt, Jiang, & Grabe, 2011). The process to increase a learner’s vocabulary at the rate of around 1000 word families per year (Biemiller & Boote, 2006; Goulden, Nation, & Read, 1990) can break the difficulty in unfamiliar vocabulary. Besides, reading texts at the right level was much suggested. That is because in most novels a very large number of different words occur beyond the learners’ current vocabulary knowledge. Unsimplified text clearly provides poor conditions for reading and vocabulary learning for learners whose vocabulary size are less than 9,000 word families. Here is the freely available software, Mid-frequency Readers, to solve the problem. 3. What kinds of input provide the greatest chance of meeting most of the most frequent 9,000 word families? Extensive reading is much encouraged by some researchers here. There are many other kinds of input than novels. What is noticeable is that journals corpus that results in the richness of vocabulary. A mixed written and spoken corpus provides better opportunities to meet most of the 1st 9,000 word families of English. Reflection The pedagogical implications are as follow: First, a fixed image created by people is that the vocabulary is the only key to a successful comprehension of reading. This study challenged this view of point. Some researchers consider that explicit and enough reading can strengthen readers’ vocabulary. The goal can be achieved if only the context is chosen carefully and appropriate to provide for reading. “Would the vocabulary be simplified or adjusted well to the readers’ comprehensive ability?” The choice of the reading material is the key to open the door of the successful learning. Second, the strengthening of reading and the increasing of vocabulary are like to build a tall building. The process of progress should be taken step by step. Even a brick of a building does matter. As the proverb goes, “Rome wasn’t built in a day.” In this study, the analysis of word families at different levels persuades so much that anyone can achieve the goal easily by spending very few time everyday reading some available newspapers, magazines, or watching movies. Besides it seems so easy and convenient for everyone to achieve the goal in reading and learning. From those selected materials, such as an interesting article from a magazine or a detective novel would draw a great attraction for some readers. Furthermore, the very goal is to set a regular habit of reading. To read daily is encouraged. It doesn’t require much time and energy. This is based on the belief: “Wild reading will increase your vocabulary.” And hope for the carrying out of the reading goal. The good habit of reading plays a key role in a successful learning. However, computer-based text analysis programs like Range cannot deal with polysemy, homography, and homonymy, meaning that some families like bank as in “the bank of a river and bank as in the bank that takes your money” are not distinguished. The problems with the crude calculations were also concerned. These limitations remind me of the value of solely through reading input by Cobb. To me, a mixture of input is preferable. Conclusion This study held a very positive view of the acquisition of vocabulary. I agree that learning through input is feasible for learners of English as a foreign language if texts at the appropriate level are available. Besides, a well-balanced vocabulary learning program contains both message-focused opportunities for learning as well as an appropriate amount of deliberate vocabulary learning. There are very rapid advances in the kind of support that computer technology can give to learning from reading, such as Tom Cobb’s Read with resources. Not only learners but also teachers are expected to explore the software as possible as they can. That is to say we have an efficient and convenient learning way besides those traditional ways.